13458649 has 2 divisors, whose sum is σ = 13458650. Its totient is φ = 13458648.

The previous prime is 13458637. The next prime is 13458691. The reversal of 13458649 is 94685431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8596624 + 4862025 = 2932^2 + 2205^2 .

It is a cyclic number.

It is not a de Polignac number, because 13458649 - 2⁷ = 13458521 is a prime.

It is a super-2 number, since 2×13458649² = 362270465810402, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13456649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6729324 + 6729325.

It is an arithmetic number, because the mean of its divisors is an integer number (6729325).

Almost surely, 2^13458649 is an apocalyptic number.

It is an amenable number.

13458649 is a deficient number, since it is larger than the sum of its proper divisors (1).

13458649 is an equidigital number, since it uses as much as digits as its factorization.

13458649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 103680, while the sum is 40.

The square root of 13458649 is about 3668.6031401611. The cubic root of 13458649 is about 237.8667957394.

The spelling of 13458649 in words is "thirteen million, four hundred fifty-eight thousand, six hundred forty-nine".