12490689 has 4 divisors (see below), whose sum is σ = 16654256. Its totient is φ = 8327124.

The previous prime is 12490663. The next prime is 12490711. The reversal of 12490689 is 98609421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98609421 = 3 ⋅32869807.

It is not a de Polignac number, because 12490689 - 2⁸ = 12490433 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12490589) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2081779 + ... + 2081784.

It is an arithmetic number, because the mean of its divisors is an integer number (4163564).

Almost surely, 2^12490689 is an apocalyptic number.

It is an amenable number.

12490689 is a deficient number, since it is larger than the sum of its proper divisors (4163567).

12490689 is an equidigital number, since it uses as much as digits as its factorization.

12490689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4163566.

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 12490689 is about 3534.2168863837. The cubic root of 12490689 is about 232.0218035889.

The spelling of 12490689 in words is "twelve million, four hundred ninety thousand, six hundred eighty-nine".