398046458 has 4 divisors (see below), whose sum is σ = 597069690. Its totient is φ = 199023228.

The previous prime is 398046437. The next prime is 398046463. The reversal of 398046458 is 854640893.

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., 246584209 + 151462249 = 15703^2 + 12307^2 .

It is a Curzon number.

It is an unprimeable number.

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, 99511613 + ... + 99511616.

Almost surely, 2^398046458 is an apocalyptic number.

398046458 is a deficient number, since it is larger than the sum of its proper divisors (199023232).

398046458 is a wasteful number, since it uses less digits than its factorization.

398046458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199023231.

The product of its (nonzero) digits is 829440, while the sum is 47.

The square root of 398046458 is about 19951.1016738425. The cubic root of 398046458 is about 735.6048566653.

The spelling of 398046458 in words is "three hundred ninety-eight million, forty-six thousand, four hundred fifty-eight".