40904065479 has 16 divisors (see below), whose sum is σ = 54702071424. Its totient is φ = 27187826400.

The previous prime is 40904065451. The next prime is 40904065541. The reversal of 40904065479 is 97456040904.

It is a happy number.

It is not a de Polignac number, because 40904065479 - 2¹⁶ = 40903999943 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40904065429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1594317 + ... + 1619769.

It is an arithmetic number, because the mean of its divisors is an integer number (3418879464).

Almost surely, 2^40904065479 is an apocalyptic number.

40904065479 is a deficient number, since it is larger than the sum of its proper divisors (13798005945).

40904065479 is a wasteful number, since it uses less digits than its factorization.

40904065479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27038.

The product of its (nonzero) digits is 1088640, while the sum is 48.

The spelling of 40904065479 in words is "forty billion, nine hundred four million, sixty-five thousand, four hundred seventy-nine".