420916398 has 16 divisors (see below), whose sum is σ = 962094720. Its totient is φ = 120261816.

The previous prime is 420916393. The next prime is 420916417. The reversal of 420916398 is 893619024.

It is a super-2 number, since 2×420916398² = 354341228210588808, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 10021819 = 420916398 / (4 + 2 + 0 + 9 + 1 + 6 + 3 + 9 + 8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420916393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5010868 + ... + 5010951.

It is an arithmetic number, because the mean of its divisors is an integer number (60130920).

Almost surely, 2^420916398 is an apocalyptic number.

420916398 is an abundant number, since it is smaller than the sum of its proper divisors (541178322).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420916398 is a wasteful number, since it uses less digits than its factorization.

420916398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10021831.

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 420916398 is about 20516.2471714493. The cubic root of 420916398 is about 749.4315087547.

The spelling of 420916398 in words is "four hundred twenty million, nine hundred sixteen thousand, three hundred ninety-eight".