438487998 has 24 divisors (see below), whose sum is σ = 944834184. Its totient is φ = 134862480.

The previous prime is 438487991. The next prime is 438488009. The reversal of 438487998 is 899784834.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438487991) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 183753 + ... + 186123.

It is an arithmetic number, because the mean of its divisors is an integer number (39368091).

Almost surely, 2^438487998 is an apocalyptic number.

438487998 is an abundant number, since it is smaller than the sum of its proper divisors (506346186).

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

438487998 is an equidigital number, since it uses as much as digits as its factorization.

438487998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4760 (or 2389 counting only the distinct ones).

The product of its digits is 13934592, while the sum is 60.

The square root of 438487998 is about 20940.1050140633. The cubic root of 438487998 is about 759.7182693062.

The spelling of 438487998 in words is "four hundred thirty-eight million, four hundred eighty-seven thousand, nine hundred ninety-eight".