13449391 has 2 divisors, whose sum is σ = 13449392. Its totient is φ = 13449390.

The previous prime is 13449383. The next prime is 13449409. The reversal of 13449391 is 19394431.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13449391 - 2³ = 13449383 is a prime.

It is a super-2 number, since 2×13449391² = 361772236541762, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13449311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6724695 + 6724696.

It is an arithmetic number, because the mean of its divisors is an integer number (6724696).

Almost surely, 2^13449391 is an apocalyptic number.

13449391 is a deficient number, since it is larger than the sum of its proper divisors (1).

13449391 is an equidigital number, since it uses as much as digits as its factorization.

13449391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 34.

The square root of 13449391 is about 3667.3411349369. The cubic root of 13449391 is about 237.8122415779.

The spelling of 13449391 in words is "thirteen million, four hundred forty-nine thousand, three hundred ninety-one".