12369290 has 16 divisors (see below), whose sum is σ = 22808520. Its totient is φ = 4826880.

The previous prime is 12369281. The next prime is 12369317. The reversal of 12369290 is 9296321.

It is a Cunningham number, because it is equal to 3517²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 7166329 + 5202961 = 2677^2 + 2281^2 .

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

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, 14675 + ... + 15494.

Almost surely, 2^12369290 is an apocalyptic number.

12369290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12369290 is a deficient number, since it is larger than the sum of its proper divisors (10439230).

12369290 is a wasteful number, since it uses less digits than its factorization.

12369290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30217.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 12369290 is about 3517.0001421666. Note that the first 3 decimals coincide. The cubic root of 12369290 is about 231.2676694558.

The spelling of 12369290 in words is "twelve million, three hundred sixty-nine thousand, two hundred ninety".