398892254 has 4 divisors (see below), whose sum is σ = 598338384. Its totient is φ = 199446126.

The previous prime is 398892163. The next prime is 398892259. The reversal of 398892254 is 452298893.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398892259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99723062 + ... + 99723065.

It is an arithmetic number, because the mean of its divisors is an integer number (149584596).

Almost surely, 2^398892254 is an apocalyptic number.

398892254 is a deficient number, since it is larger than the sum of its proper divisors (199446130).

398892254 is a wasteful number, since it uses less digits than its factorization.

398892254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199446129.

The product of its digits is 1244160, while the sum is 50.

The square root of 398892254 is about 19972.2871499486. The cubic root of 398892254 is about 736.1255090287.

The spelling of 398892254 in words is "three hundred ninety-eight million, eight hundred ninety-two thousand, two hundred fifty-four".