12509494 has 8 divisors (see below), whose sum is σ = 18936720. Its totient is φ = 6197256.

The previous prime is 12509479. The next prime is 12509507. The reversal of 12509494 is 49490521.

It is a sphenic number, since it is the product of 3 distinct primes.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28474 + ... + 28909.

It is an arithmetic number, because the mean of its divisors is an integer number (2367090).

Almost surely, 2^12509494 is an apocalyptic number.

12509494 is a deficient number, since it is larger than the sum of its proper divisors (6427226).

12509494 is a wasteful number, since it uses less digits than its factorization.

12509494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57494.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 12509494 is about 3536.8763054424. The cubic root of 12509494 is about 232.1381831372.

The spelling of 12509494 in words is "twelve million, five hundred nine thousand, four hundred ninety-four".