58491239 has 2 divisors, whose sum is σ = 58491240. Its totient is φ = 58491238.

The previous prime is 58491233. The next prime is 58491241. The reversal of 58491239 is 93219485.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-58491239 is a prime.

It is a Sophie Germain prime.

Together with 58491241, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 58491196 and 58491205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (58491233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29245619 + 29245620.

It is an arithmetic number, because the mean of its divisors is an integer number (29245620).

Almost surely, 2^58491239 is an apocalyptic number.

58491239 is a deficient number, since it is larger than the sum of its proper divisors (1).

58491239 is an equidigital number, since it uses as much as digits as its factorization.

58491239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 41.

The square root of 58491239 is about 7647.9565244580. The cubic root of 58491239 is about 388.1774239924.

The spelling of 58491239 in words is "fifty-eight million, four hundred ninety-one thousand, two hundred thirty-nine".