38399458 has 4 divisors (see below), whose sum is σ = 57599190. Its totient is φ = 19199728.

The previous prime is 38399453. The next prime is 38399461. The reversal of 38399458 is 85499383.

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., 37540129 + 859329 = 6127^2 + 927^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (38399453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9599863 + ... + 9599866.

Almost surely, 2^38399458 is an apocalyptic number.

38399458 is a deficient number, since it is larger than the sum of its proper divisors (19199732).

38399458 is a wasteful number, since it uses less digits than its factorization.

38399458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19199731.

The product of its digits is 933120, while the sum is 49.

The square root of 38399458 is about 6196.7296213406. The cubic root of 38399458 is about 337.3714788198.

The spelling of 38399458 in words is "thirty-eight million, three hundred ninety-nine thousand, four hundred fifty-eight".