13439497 has 2 divisors, whose sum is σ = 13439498. Its totient is φ = 13439496.

The previous prime is 13439483. The next prime is 13439527. The reversal of 13439497 is 79493431.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12845056 + 594441 = 3584^2 + 771^2 .

It is a cyclic number.

It is not a de Polignac number, because 13439497 - 2¹¹ = 13437449 is a prime.

It is a super-2 number, since 2×13439497² = 361240159226018, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13439407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6719748 + 6719749.

It is an arithmetic number, because the mean of its divisors is an integer number (6719749).

Almost surely, 2^13439497 is an apocalyptic number.

It is an amenable number.

13439497 is a deficient number, since it is larger than the sum of its proper divisors (1).

13439497 is an equidigital number, since it uses as much as digits as its factorization.

13439497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 40.

The square root of 13439497 is about 3665.9919530735. The cubic root of 13439497 is about 237.7539120093.

The spelling of 13439497 in words is "thirteen million, four hundred thirty-nine thousand, four hundred ninety-seven".