40379636 has 36 divisors (see below), whose sum is σ = 81779040. Its totient is φ = 17384400.

The previous prime is 40379611. The next prime is 40379657. The reversal of 40379636 is 63697304.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a self number, because there is not a number n which added to its sum of digits gives 40379636.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 7001 + ... + 11391.

It is an arithmetic number, because the mean of its divisors is an integer number (2271640).

Almost surely, 2^40379636 is an apocalyptic number.

It is an amenable number.

40379636 is an abundant number, since it is smaller than the sum of its proper divisors (41399404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40379636 is a wasteful number, since it uses less digits than its factorization.

40379636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4436 (or 4423 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 38.

The square root of 40379636 is about 6354.4973050588. The cubic root of 40379636 is about 343.0737317659.

The spelling of 40379636 in words is "forty million, three hundred seventy-nine thousand, six hundred thirty-six".