390012390 has 24 divisors (see below), whose sum is σ = 1014032448. Its totient is φ = 104003280.

The previous prime is 390012379. The next prime is 390012397. The reversal of 390012390 is 93210093.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390012397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2166646 + ... + 2166825.

It is an arithmetic number, because the mean of its divisors is an integer number (42251352).

Almost surely, 2^390012390 is an apocalyptic number.

390012390 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

390012390 is an abundant number, since it is smaller than the sum of its proper divisors (624020058).

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

390012390 is a wasteful number, since it uses less digits than its factorization.

390012390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4333484 (or 4333481 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 27.

The square root of 390012390 is about 19748.7313516590. The cubic root of 390012390 is about 730.6220943431.

It can be divided in two parts, 3900 and 12390, that added together give a triangular number (16290 = T₁₈₀).

The spelling of 390012390 in words is "three hundred ninety million, twelve thousand, three hundred ninety".