258423794 has 4 divisors (see below), whose sum is σ = 387635694. Its totient is φ = 129211896.

The previous prime is 258423793. The next prime is 258423821. The reversal of 258423794 is 497324852.

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., 252396769 + 6027025 = 15887^2 + 2455^2 .

It is not an unprimeable number, because it can be changed into a prime (258423793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64605947 + ... + 64605950.

Almost surely, 2^258423794 is an apocalyptic number.

258423794 is a deficient number, since it is larger than the sum of its proper divisors (129211900).

258423794 is a wasteful number, since it uses less digits than its factorization.

258423794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129211899.

The product of its digits is 483840, while the sum is 44.

The square root of 258423794 is about 16075.5651222593. The cubic root of 258423794 is about 636.9580530117.

The spelling of 258423794 in words is "two hundred fifty-eight million, four hundred twenty-three thousand, seven hundred ninety-four".