39930618 has 32 divisors (see below), whose sum is σ = 98292096. Its totient is φ = 10531008.

The previous prime is 39930607. The next prime is 39930619. The reversal of 39930618 is 81603993.

39930618 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (39930619) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 36021 + ... + 37112.

It is an arithmetic number, because the mean of its divisors is an integer number (3071628).

Almost surely, 2^39930618 is an apocalyptic number.

39930618 is an abundant number, since it is smaller than the sum of its proper divisors (58361478).

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

39930618 is a wasteful number, since it uses less digits than its factorization.

39930618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73158.

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 39930618 is about 6319.0678109987. The cubic root of 39930618 is about 341.7973389789.

The spelling of 39930618 in words is "thirty-nine million, nine hundred thirty thousand, six hundred eighteen".