12905090 has 16 divisors (see below), whose sum is σ = 25341120. Its totient is φ = 4692720.

The previous prime is 12905077. The next prime is 12905111. The reversal of 12905090 is 9050921.

It is a happy number.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58550 + ... + 58769.

It is an arithmetic number, because the mean of its divisors is an integer number (1583820).

Almost surely, 2^12905090 is an apocalyptic number.

12905090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12905090 is a deficient number, since it is larger than the sum of its proper divisors (12436030).

12905090 is a wasteful number, since it uses less digits than its factorization.

12905090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117337.

The product of its (nonzero) digits is 810, while the sum is 26.

The square root of 12905090 is about 3592.3655159240. The cubic root of 12905090 is about 234.5598521535.

The spelling of 12905090 in words is "twelve million, nine hundred five thousand, ninety".