39402986 has 8 divisors (see below), whose sum is σ = 67548000. Its totient is φ = 16886988.

The previous prime is 39402971. The next prime is 39402989. The reversal of 39402986 is 68920493.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (39402989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1407236 + ... + 1407263.

It is an arithmetic number, because the mean of its divisors is an integer number (8443500).

Almost surely, 2^39402986 is an apocalyptic number.

39402986 is a deficient number, since it is larger than the sum of its proper divisors (28145014).

39402986 is a wasteful number, since it uses less digits than its factorization.

39402986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2814508.

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 39402986 is about 6277.1797807614. The cubic root of 39402986 is about 340.2851874806.

The spelling of 39402986 in words is "thirty-nine million, four hundred two thousand, nine hundred eighty-six".