438999798 has 32 divisors (see below), whose sum is σ = 902486880. Its totient is φ = 142306560.

The previous prime is 438999797. The next prime is 438999809. The reversal of 438999798 is 897999834.

It is a super-3 number, since 3×438999798³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438999793) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25836 + ... + 39312.

It is an arithmetic number, because the mean of its divisors is an integer number (28202715).

Almost surely, 2^438999798 is an apocalyptic number.

438999798 is an abundant number, since it is smaller than the sum of its proper divisors (463487082).

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

438999798 is a wasteful number, since it uses less digits than its factorization.

438999798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13632.

The product of its digits is 35271936, while the sum is 66.

The square root of 438999798 is about 20952.3220192894. The cubic root of 438999798 is about 760.0137335930.

The spelling of 438999798 in words is "four hundred thirty-eight million, nine hundred ninety-nine thousand, seven hundred ninety-eight".