39120990 has 16 divisors (see below), whose sum is σ = 93890448. Its totient is φ = 10432256.

The previous prime is 39120989. The next prime is 39120997. The reversal of 39120990 is 9902193.

39120990 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 (39120997) 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, 651987 + ... + 652046.

It is an arithmetic number, because the mean of its divisors is an integer number (5868153).

Almost surely, 2^39120990 is an apocalyptic number.

39120990 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

39120990 is an abundant number, since it is smaller than the sum of its proper divisors (54769458).

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

39120990 is a wasteful number, since it uses less digits than its factorization.

39120990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1304043.

The product of its (nonzero) digits is 4374, while the sum is 33.

The square root of 39120990 is about 6254.6774497171. The cubic root of 39120990 is about 339.4714683247.

The spelling of 39120990 in words is "thirty-nine million, one hundred twenty thousand, nine hundred ninety".