258023929 has 2 divisors, whose sum is σ = 258023930. Its totient is φ = 258023928.

The previous prime is 258023921. The next prime is 258023939. The reversal of 258023929 is 929320852.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 238239225 + 19784704 = 15435^2 + 4448^2 .

It is a cyclic number.

It is not a de Polignac number, because 258023929 - 2³ = 258023921 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 258023891 and 258023900.

It is not a weakly prime, because it can be changed into another prime (258023921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129011964 + 129011965.

It is an arithmetic number, because the mean of its divisors is an integer number (129011965).

Almost surely, 2^258023929 is an apocalyptic number.

It is an amenable number.

258023929 is a deficient number, since it is larger than the sum of its proper divisors (1).

258023929 is an equidigital number, since it uses as much as digits as its factorization.

258023929 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 258023929 is about 16063.1232641725. The cubic root of 258023929 is about 636.6293568712.

The spelling of 258023929 in words is "two hundred fifty-eight million, twenty-three thousand, nine hundred twenty-nine".