39408018 has 16 divisors (see below), whose sum is σ = 84878976. Its totient is φ = 12125520.

The previous prime is 39407999. The next prime is 39408049. The reversal of 39408018 is 81080493.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 39408018.

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 7 ways as a sum of consecutive naturals, for example, 252538 + ... + 252693.

It is an arithmetic number, because the mean of its divisors is an integer number (5304936).

Almost surely, 2^39408018 is an apocalyptic number.

39408018 is an abundant number, since it is smaller than the sum of its proper divisors (45470958).

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

39408018 is a wasteful number, since it uses less digits than its factorization.

39408018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505249.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 39408018 is about 6277.5805849069. The cubic root of 39408018 is about 340.2996723573.

The spelling of 39408018 in words is "thirty-nine million, four hundred eight thousand, eighteen".