13391458 has 4 divisors (see below), whose sum is σ = 20087190. Its totient is φ = 6695728.

The previous prime is 13391453. The next prime is 13391467. The reversal of 13391458 is 85419331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 8625969 + 4765489 = 2937^2 + 2183^2 .

It is a super-2 number, since 2×13391458² = 358662294731528, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13391453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3347863 + ... + 3347866.

Almost surely, 2^13391458 is an apocalyptic number.

13391458 is a deficient number, since it is larger than the sum of its proper divisors (6695732).

13391458 is an equidigital number, since it uses as much as digits as its factorization.

13391458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6695731.

The product of its digits is 12960, while the sum is 34.

The square root of 13391458 is about 3659.4341092579. The cubic root of 13391458 is about 237.4702928679.

The spelling of 13391458 in words is "thirteen million, three hundred ninety-one thousand, four hundred fifty-eight".