422967987 has 88 divisors (see below), whose sum is σ = 744013200. Its totient is φ = 238085568.

The previous prime is 422967977. The next prime is 422967989. The reversal of 422967987 is 789769224.

It is a de Polignac number, because none of the positive numbers 2^k-422967987 is a prime.

Its product of digits (3048192) is a multiple of the sum of its prime divisors (64).

It is not an unprimeable number, because it can be changed into a prime (422967989) by changing a digit.

It is a polite number, since it can be written in 87 ways as a sum of consecutive naturals, for example, 14585089 + ... + 14585117.

Almost surely, 2^422967987 is an apocalyptic number.

422967987 is a deficient number, since it is larger than the sum of its proper divisors (321045213).

422967987 is an equidigital number, since it uses as much as digits as its factorization.

422967987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91 (or 64 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 54.

The square root of 422967987 is about 20566.1855238155. The cubic root of 422967987 is about 750.6471374569.

The spelling of 422967987 in words is "four hundred twenty-two million, nine hundred sixty-seven thousand, nine hundred eighty-seven".