58991391 has 6 divisors (see below), whose sum is σ = 85209800. Its totient is φ = 39327588.

The previous prime is 58991381. The next prime is 58991407. The reversal of 58991391 is 19319985.

It is not a de Polignac number, because 58991391 - 2⁷ = 58991263 is a prime.

It is a super-2 number, since 2×58991391² = 6959968424229762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (58991351) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3277291 + ... + 3277308.

Almost surely, 2^58991391 is an apocalyptic number.

58991391 is a deficient number, since it is larger than the sum of its proper divisors (26218409).

58991391 is a wasteful number, since it uses less digits than its factorization.

58991391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6554605 (or 6554602 counting only the distinct ones).

The product of its digits is 87480, while the sum is 45.

The square root of 58991391 is about 7680.5853292571. The cubic root of 58991391 is about 389.2807057476.

The spelling of 58991391 in words is "fifty-eight million, nine hundred ninety-one thousand, three hundred ninety-one".