438647898 has 32 divisors (see below), whose sum is σ = 964889856. Its totient is φ = 132095808.

The previous prime is 438647863. The next prime is 438647977. The reversal of 438647898 is 898746834.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56161 + ... + 63492.

It is an arithmetic number, because the mean of its divisors is an integer number (30152808).

Almost surely, 2^438647898 is an apocalyptic number.

438647898 is an abundant number, since it is smaller than the sum of its proper divisors (526241958).

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

438647898 is a wasteful number, since it uses less digits than its factorization.

438647898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119718.

The product of its digits is 9289728, while the sum is 57.

The square root of 438647898 is about 20943.9226984822. The cubic root of 438647898 is about 759.8106049296.

The spelling of 438647898 in words is "four hundred thirty-eight million, six hundred forty-seven thousand, eight hundred ninety-eight".