Search a number
-
+
8981069 = 19945131
BaseRepresentation
bin100010010000…
…101001001101
3121220021201012
4202100221031
54244343234
6520255005
7136223606
oct42205115
917807635
108981069
115084679
123011465
131b25b56
14129adad
15bc60ce
hex890a4d

8981069 has 4 divisors (see below), whose sum is σ = 9026400. Its totient is φ = 8935740.

The previous prime is 8981057. The next prime is 8981087. The reversal of 8981069 is 9601898.

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.

It is a cyclic number.

It is not a de Polignac number, because 8981069 - 28 = 8980813 is a prime.

It is a super-2 number, since 2×89810692 = 161319200765522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8981099) 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, 22367 + ... + 22764.

It is an arithmetic number, because the mean of its divisors is an integer number (2256600).

Almost surely, 28981069 is an apocalyptic number.

It is an amenable number.

8981069 is a deficient number, since it is larger than the sum of its proper divisors (45331).

8981069 is a wasteful number, since it uses less digits than its factorization.

8981069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45330.

The product of its (nonzero) digits is 31104, while the sum is 41.

The square root of 8981069 is about 2996.8431724066. The cubic root of 8981069 is about 207.8624352347.

The spelling of 8981069 in words is "eight million, nine hundred eighty-one thousand, sixty-nine".

Divisors: 1 199 45131 8981069