398475454 has 16 divisors (see below), whose sum is σ = 648764928. Its totient is φ = 182462112.

The previous prime is 398475449. The next prime is 398475463. The reversal of 398475454 is 454574893.

It is a happy number.

It is a super-2 number, since 2×398475454² = 317565374881012232, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 398475398 and 398475407.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57037 + ... + 63640.

It is an arithmetic number, because the mean of its divisors is an integer number (40547808).

Almost surely, 2^398475454 is an apocalyptic number.

398475454 is a deficient number, since it is larger than the sum of its proper divisors (250289474).

398475454 is a wasteful number, since it uses less digits than its factorization.

398475454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120819.

The product of its digits is 2419200, while the sum is 49.

The square root of 398475454 is about 19961.8499643695. The cubic root of 398475454 is about 735.8690287094.

The spelling of 398475454 in words is "three hundred ninety-eight million, four hundred seventy-five thousand, four hundred fifty-four".