12909501 has 12 divisors (see below), whose sum is σ = 20342400. Its totient is φ = 7823880.

The previous prime is 12909473. The next prime is 12909521. The reversal of 12909501 is 10590921.

It is a happy number.

It is not a de Polignac number, because 12909501 - 2¹⁸ = 12647357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12909521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65101 + ... + 65298.

It is an arithmetic number, because the mean of its divisors is an integer number (1695200).

Almost surely, 2^12909501 is an apocalyptic number.

12909501 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12909501 is a deficient number, since it is larger than the sum of its proper divisors (7432899).

12909501 is a wasteful number, since it uses less digits than its factorization.

12909501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130416 (or 130413 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 27.

The square root of 12909501 is about 3592.9794043384. The cubic root of 12909501 is about 234.5865735389.

The spelling of 12909501 in words is "twelve million, nine hundred nine thousand, five hundred one".