39890830 has 16 divisors (see below), whose sum is σ = 82061280. Its totient is φ = 13676832.

The previous prime is 39890819. The next prime is 39890833. The reversal of 39890830 is 3809893.

39890830 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39890833) 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 7 ways as a sum of consecutive naturals, for example, 284865 + ... + 285004.

It is an arithmetic number, because the mean of its divisors is an integer number (5128830).

Almost surely, 2^39890830 is an apocalyptic number.

39890830 is an abundant number, since it is smaller than the sum of its proper divisors (42170450).

39890830 is a wasteful number, since it uses less digits than its factorization.

39890830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569883.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 39890830 is about 6315.9187771852. The cubic root of 39890830 is about 341.6837757313.

The spelling of 39890830 in words is "thirty-nine million, eight hundred ninety thousand, eight hundred thirty".