13457849 has 2 divisors, whose sum is σ = 13457850. Its totient is φ = 13457848.

The previous prime is 13457831. The next prime is 13457879. The reversal of 13457849 is 94875431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10758400 + 2699449 = 3280^2 + 1643^2 .

It is a cyclic number.

It is not a de Polignac number, because 13457849 - 2⁸ = 13457593 is a prime.

It is a super-2 number, since 2×13457849² = 362227399413602, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (13457879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6728924 + 6728925.

It is an arithmetic number, because the mean of its divisors is an integer number (6728925).

Almost surely, 2^13457849 is an apocalyptic number.

It is an amenable number.

13457849 is a deficient number, since it is larger than the sum of its proper divisors (1).

13457849 is an equidigital number, since it uses as much as digits as its factorization.

13457849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 41.

The square root of 13457849 is about 3668.4941052154. The cubic root of 13457849 is about 237.8620826065.

The spelling of 13457849 in words is "thirteen million, four hundred fifty-seven thousand, eight hundred forty-nine".