40304979 has 72 divisors (see below), whose sum is σ = 72043440. Its totient is φ = 22239360.

The previous prime is 40304969. The next prime is 40304987. The reversal of 40304979 is 97940304.

It is not a de Polignac number, because 40304979 - 2⁷ = 40304851 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40304969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 552087 + ... + 552159.

Almost surely, 2^40304979 is an apocalyptic number.

40304979 is a deficient number, since it is larger than the sum of its proper divisors (31738461).

40304979 is a wasteful number, since it uses less digits than its factorization.

40304979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130 (or 100 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 40304979 is about 6348.6202438010. The cubic root of 40304979 is about 342.8621675603.

It can be divided in two parts, 4030 and 4979, that added together give a palindrome (9009).

The spelling of 40304979 in words is "forty million, three hundred four thousand, nine hundred seventy-nine".