12900390 has 16 divisors (see below), whose sum is σ = 30961008. Its totient is φ = 3440096.

The previous prime is 12900367. The next prime is 12900397. The reversal of 12900390 is 9300921.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12900390.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12900397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214977 + ... + 215036.

It is an arithmetic number, because the mean of its divisors is an integer number (1935063).

Almost surely, 2^12900390 is an apocalyptic number.

12900390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12900390 is an abundant number, since it is smaller than the sum of its proper divisors (18060618).

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

12900390 is a wasteful number, since it uses less digits than its factorization.

12900390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430023.

The product of its (nonzero) digits is 486, while the sum is 24.

The square root of 12900390 is about 3591.7112912928. The cubic root of 12900390 is about 234.5313733345.

The spelling of 12900390 in words is "twelve million, nine hundred thousand, three hundred ninety".