429787638 has 48 divisors (see below), whose sum is σ = 1120254720. Its totient is φ = 116332848.

The previous prime is 429787601. The next prime is 429787661. The reversal of 429787638 is 836787924.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 87370 + ... + 92157.

It is an arithmetic number, because the mean of its divisors is an integer number (23338640).

Almost surely, 2^429787638 is an apocalyptic number.

429787638 is an abundant number, since it is smaller than the sum of its proper divisors (690467082).

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

429787638 is a wasteful number, since it uses less digits than its factorization.

429787638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179561 (or 179558 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 54.

The square root of 429787638 is about 20731.3202184521. The cubic root of 429787638 is about 754.6599571009.

The spelling of 429787638 in words is "four hundred twenty-nine million, seven hundred eighty-seven thousand, six hundred thirty-eight".