58721939 has 2 divisors, whose sum is σ = 58721940. Its totient is φ = 58721938.

The previous prime is 58721869. The next prime is 58721953. The reversal of 58721939 is 93912785.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 58721939 - 2⁸ = 58721683 is a prime.

It is a super-2 number, since 2×58721939² = 6896532239839442, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 58721939.

It is not a weakly prime, because it can be changed into another prime (58721969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29360969 + 29360970.

It is an arithmetic number, because the mean of its divisors is an integer number (29360970).

Almost surely, 2^58721939 is an apocalyptic number.

58721939 is a deficient number, since it is larger than the sum of its proper divisors (1).

58721939 is an equidigital number, since it uses as much as digits as its factorization.

58721939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 136080, while the sum is 44.

The square root of 58721939 is about 7663.0241419429. The cubic root of 58721939 is about 388.6871017575.

The spelling of 58721939 in words is "fifty-eight million, seven hundred twenty-one thousand, nine hundred thirty-nine".