398974463 has 4 divisors (see below), whose sum is σ = 399062400. Its totient is φ = 398886528.

The previous prime is 398974453. The next prime is 398974501. The reversal of 398974463 is 364479893.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 364479893 = 457 ⋅797549.

It is a cyclic number.

It is not a de Polignac number, because 398974463 - 2¹⁸ = 398712319 is a prime.

It is a super-2 number, since 2×398974463² = 318361244252276738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398974453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36770 + ... + 46367.

It is an arithmetic number, because the mean of its divisors is an integer number (99765600).

Almost surely, 2^398974463 is an apocalyptic number.

398974463 is a deficient number, since it is larger than the sum of its proper divisors (87937).

398974463 is an equidigital number, since it uses as much as digits as its factorization.

398974463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87936.

The product of its digits is 3919104, while the sum is 53.

The square root of 398974463 is about 19974.3451206792. The cubic root of 398974463 is about 736.1760757206.

The spelling of 398974463 in words is "three hundred ninety-eight million, nine hundred seventy-four thousand, four hundred sixty-three".