40156366 has 4 divisors (see below), whose sum is σ = 60234552. Its totient is φ = 20078182.

The previous prime is 40156357. The next prime is 40156399. The reversal of 40156366 is 66365104.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×40156366² = 3225067460651912, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10039090 + ... + 10039093.

It is an arithmetic number, because the mean of its divisors is an integer number (15058638).

Almost surely, 2^40156366 is an apocalyptic number.

40156366 is a deficient number, since it is larger than the sum of its proper divisors (20078186).

40156366 is a wasteful number, since it uses less digits than its factorization.

40156366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20078185.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 40156366 is about 6336.9050805579. The cubic root of 40156366 is about 342.4402467376.

The spelling of 40156366 in words is "forty million, one hundred fifty-six thousand, three hundred sixty-six".