422439888 has 40 divisors (see below), whose sum is σ = 1175251168. Its totient is φ = 129981312.

The previous prime is 422439859. The next prime is 422439889. The reversal of 422439888 is 888934224.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422439889) 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, 337870 + ... + 339117.

Almost surely, 2^422439888 is an apocalyptic number.

422439888 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

422439888 is an abundant number, since it is smaller than the sum of its proper divisors (752811280).

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

422439888 is a wasteful number, since it uses less digits than its factorization.

422439888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677011 (or 677005 counting only the distinct ones).

The product of its digits is 884736, while the sum is 48.

The square root of 422439888 is about 20553.3425018901. The cubic root of 422439888 is about 750.3345991468.

The spelling of 422439888 in words is "four hundred twenty-two million, four hundred thirty-nine thousand, eight hundred eighty-eight".