422863987392 has 672 divisors, whose sum is σ = 1564976824320. Its totient is φ = 105972572160.

The previous prime is 422863987369. The next prime is 422863987433. The reversal of 422863987392 is 293789368224.

It is a tau number, because it is divible by the number of its divisors (672).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 208409034 + ... + 208411062.

It is an arithmetic number, because the mean of its divisors is an integer number (2328834560).

Almost surely, 2^422863987392 is an apocalyptic number.

422863987392 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 422863987392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (782488412160).

422863987392 is an abundant number, since it is smaller than the sum of its proper divisors (1142112836928).

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

422863987392 is a wasteful number, since it uses less digits than its factorization.

422863987392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2229 (or 2216 counting only the distinct ones).

The product of its digits is 62705664, while the sum is 63.

The spelling of 422863987392 in words is "four hundred twenty-two billion, eight hundred sixty-three million, nine hundred eighty-seven thousand, three hundred ninety-two".