438897998 has 48 divisors (see below), whose sum is σ = 838594944. Its totient is φ = 170855160.

The previous prime is 438897971. The next prime is 438898003. The reversal of 438897998 is 899798834.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 369161 + ... + 370347.

It is an arithmetic number, because the mean of its divisors is an integer number (17470728).

Almost surely, 2^438897998 is an apocalyptic number.

438897998 is a deficient number, since it is larger than the sum of its proper divisors (399696946).

438897998 is an equidigital number, since it uses as much as digits as its factorization.

438897998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1235 (or 1207 counting only the distinct ones).

The product of its digits is 31352832, while the sum is 65.

The square root of 438897998 is about 20949.8925534238. The cubic root of 438897998 is about 759.9549823289.

The spelling of 438897998 in words is "four hundred thirty-eight million, eight hundred ninety-seven thousand, nine hundred ninety-eight".