40264839 has 12 divisors (see below), whose sum is σ = 58332456. Its totient is φ = 26763792.

The previous prime is 40264837. The next prime is 40264867. The reversal of 40264839 is 93846204.

It is a happy number.

40264839 is a `hidden beast` number, since 4 + 0 + 2 + 648 + 3 + 9 = 666.

It is not a de Polignac number, because 40264839 - 2¹ = 40264837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40264837) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3324 + ... + 9569.

It is an arithmetic number, because the mean of its divisors is an integer number (4861038).

Almost surely, 2^40264839 is an apocalyptic number.

40264839 is a deficient number, since it is larger than the sum of its proper divisors (18067617).

40264839 is a wasteful number, since it uses less digits than its factorization.

40264839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13246 (or 13243 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 40264839 is about 6345.4581394884. The cubic root of 40264839 is about 342.7483101743.

The spelling of 40264839 in words is "forty million, two hundred sixty-four thousand, eight hundred thirty-nine".