40479645 has 32 divisors (see below), whose sum is σ = 67313664. Its totient is φ = 20750400.

The previous prime is 40479619. The next prime is 40479667. The reversal of 40479645 is 54697404.

It is a happy number.

It is not a de Polignac number, because 40479645 - 2⁶ = 40479581 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 122130 + ... + 122460.

It is an arithmetic number, because the mean of its divisors is an integer number (2103552).

Almost surely, 2^40479645 is an apocalyptic number.

It is an amenable number.

40479645 is a deficient number, since it is larger than the sum of its proper divisors (26834019).

40479645 is a wasteful number, since it uses less digits than its factorization.

40479645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633.

The product of its (nonzero) digits is 120960, while the sum is 39.

The square root of 40479645 is about 6362.3615898501. The cubic root of 40479645 is about 343.3567306349.

The spelling of 40479645 in words is "forty million, four hundred seventy-nine thousand, six hundred forty-five".