422399670 has 64 divisors (see below), whose sum is σ = 1263914496. Its totient is φ = 87770880.

The previous prime is 422399651. The next prime is 422399683. The reversal of 422399670 is 76993224.

It is a happy number.

It is a super-2 number, since 2×422399670² = 356842962432217800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89119 + ... + 93738.

It is an arithmetic number, because the mean of its divisors is an integer number (19748664).

Almost surely, 2^422399670 is an apocalyptic number.

422399670 is an abundant number, since it is smaller than the sum of its proper divisors (841514826).

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

422399670 is a wasteful number, since it uses less digits than its factorization.

422399670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182885.

The product of its (nonzero) digits is 163296, while the sum is 42.

The square root of 422399670 is about 20552.3640975923. The cubic root of 422399670 is about 750.3107867532.

The spelling of 422399670 in words is "four hundred twenty-two million, three hundred ninety-nine thousand, six hundred seventy".