Search a number
-
+
40707049 = 155926111
BaseRepresentation
bin1001101101001…
…0001111101001
32211121010120111
42123102033221
540410111144
64012254321
71003001305
oct233221751
984533514
1040707049
1120a83899
12117713a1
138583616
145598d05
153891534
hex26d23e9

40707049 has 4 divisors (see below), whose sum is σ = 40734720. Its totient is φ = 40679380.

The previous prime is 40707019. The next prime is 40707053. The reversal of 40707049 is 94070704.

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 40707049 - 211 = 40705001 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40707049.

It is not an unprimeable number, because it can be changed into a prime (40707019) 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, 11497 + ... + 14614.

It is an arithmetic number, because the mean of its divisors is an integer number (10183680).

Almost surely, 240707049 is an apocalyptic number.

It is an amenable number.

40707049 is a deficient number, since it is larger than the sum of its proper divisors (27671).

40707049 is a wasteful number, since it uses less digits than its factorization.

40707049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27670.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 40707049 is about 6380.2075985034. The cubic root of 40707049 is about 343.9984929851.

The spelling of 40707049 in words is "forty million, seven hundred seven thousand, forty-nine".

Divisors: 1 1559 26111 40707049