420091976 has 16 divisors (see below), whose sum is σ = 829129200. Its totient is φ = 198990864.

The previous prime is 420091963. The next prime is 420091993. The reversal of 420091976 is 679190024.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1381730 + ... + 1382033.

It is an arithmetic number, because the mean of its divisors is an integer number (51820575).

Almost surely, 2^420091976 is an apocalyptic number.

It is an amenable number.

420091976 is a deficient number, since it is larger than the sum of its proper divisors (409037224).

420091976 is a wasteful number, since it uses less digits than its factorization.

420091976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2763788 (or 2763784 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 420091976 is about 20496.1453937076. The cubic root of 420091976 is about 748.9419011229.

The spelling of 420091976 in words is "four hundred twenty million, ninety-one thousand, nine hundred seventy-six".