398384026 has 4 divisors (see below), whose sum is σ = 597576042. Its totient is φ = 199192012.

The previous prime is 398384023. The next prime is 398384027. The reversal of 398384026 is 620483893.

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., 355284801 + 43099225 = 18849^2 + 6565^2 .

It is not an unprimeable number, because it can be changed into a prime (398384023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99596005 + ... + 99596008.

Almost surely, 2^398384026 is an apocalyptic number.

398384026 is a deficient number, since it is larger than the sum of its proper divisors (199192016).

398384026 is a wasteful number, since it uses less digits than its factorization.

398384026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199192015.

The product of its (nonzero) digits is 248832, while the sum is 43.

The square root of 398384026 is about 19959.5597646842. The cubic root of 398384026 is about 735.8127440382.

The spelling of 398384026 in words is "three hundred ninety-eight million, three hundred eighty-four thousand, twenty-six".