40151986 has 16 divisors (see below), whose sum is σ = 69543936. Its totient is φ = 17030016.

The previous prime is 40151929. The next prime is 40152001. The reversal of 40151986 is 68915104.

40151986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×40151986² = 3224363959488392, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13426 + ... + 16141.

It is an arithmetic number, because the mean of its divisors is an integer number (4346496).

Almost surely, 2^40151986 is an apocalyptic number.

40151986 is a deficient number, since it is larger than the sum of its proper divisors (29391950).

40151986 is a wasteful number, since it uses less digits than its factorization.

40151986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29673.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 40151986 is about 6336.5594765614. The cubic root of 40151986 is about 342.4277958863.

The spelling of 40151986 in words is "forty million, one hundred fifty-one thousand, nine hundred eighty-six".