13422491 has 2 divisors, whose sum is σ = 13422492. Its totient is φ = 13422490.

The previous prime is 13422481. The next prime is 13422499. The reversal of 13422491 is 19422431.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13422491 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13422491.

It is not a weakly prime, because it can be changed into another prime (13422499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6711245 + 6711246.

It is an arithmetic number, because the mean of its divisors is an integer number (6711246).

Almost surely, 2^13422491 is an apocalyptic number.

13422491 is a deficient number, since it is larger than the sum of its proper divisors (1).

13422491 is an equidigital number, since it uses as much as digits as its factorization.

13422491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 26.

The square root of 13422491 is about 3663.6717920687. The cubic root of 13422491 is about 237.6535870831.

The spelling of 13422491 in words is "thirteen million, four hundred twenty-two thousand, four hundred ninety-one".