Search a number
-
+
741989 = 4715787
BaseRepresentation
bin10110101001001100101
31101200211002
42311021211
5142220424
623523045
76210143
oct2651145
91350732
10741989
11467516
122b9485
131cc961
14154593
15e9cae
hexb5265

741989 has 4 divisors (see below), whose sum is σ = 757824. Its totient is φ = 726156.

The previous prime is 741973. The next prime is 741991. The reversal of 741989 is 989147.

741989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 989147 = 4492203.

It is a cyclic number.

It is not a de Polignac number, because 741989 - 24 = 741973 is a prime.

It is a super-2 number, since 2×7419892 = 1101095352242, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 741989.

It is not an unprimeable number, because it can be changed into a prime (741929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7847 + ... + 7940.

It is an arithmetic number, because the mean of its divisors is an integer number (189456).

2741989 is an apocalyptic number.

It is an amenable number.

741989 is a deficient number, since it is larger than the sum of its proper divisors (15835).

741989 is a wasteful number, since it uses less digits than its factorization.

741989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15834.

The product of its digits is 18144, while the sum is 38.

The square root of 741989 is about 861.3878336731. The cubic root of 741989 is about 90.5313831514.

The spelling of 741989 in words is "seven hundred forty-one thousand, nine hundred eighty-nine".

Divisors: 1 47 15787 741989