12290913 has 8 divisors (see below), whose sum is σ = 18208800. Its totient is φ = 8193924.

The previous prime is 12290909. The next prime is 12290917. The reversal of 12290913 is 31909221.

It is an interprime number because it is at equal distance from previous prime (12290909) and next prime (12290917).

It is not a de Polignac number, because 12290913 - 2² = 12290909 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 455219 = 12290913 / (1 + 2 + 2 + 9 + 0 + 9 + 1 + 3).

It is not an unprimeable number, because it can be changed into a prime (12290917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227583 + ... + 227636.

It is an arithmetic number, because the mean of its divisors is an integer number (2276100).

Almost surely, 2^12290913 is an apocalyptic number.

It is an amenable number.

12290913 is a deficient number, since it is larger than the sum of its proper divisors (5917887).

12290913 is an equidigital number, since it uses as much as digits as its factorization.

12290913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455228 (or 455222 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 12290913 is about 3505.8398423202. The cubic root of 12290913 is about 230.7781645003.

It can be divided in two parts, 12290 and 913, that added together give a triangular number (13203 = T₁₆₂).

The spelling of 12290913 in words is "twelve million, two hundred ninety thousand, nine hundred thirteen".