438750990 has 96 divisors (see below), whose sum is σ = 1205867520. Its totient is φ = 110455488.

The previous prime is 438750989. The next prime is 438751003. The reversal of 438750990 is 99057834.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 162189 + ... + 164871.

It is an arithmetic number, because the mean of its divisors is an integer number (12561120).

Almost surely, 2^438750990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 438750990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (602933760).

438750990 is an abundant number, since it is smaller than the sum of its proper divisors (767116530).

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

438750990 is a wasteful number, since it uses less digits than its factorization.

438750990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2798 (or 2795 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 438750990 is about 20946.3836974309. The cubic root of 438750990 is about 759.8701243905.

The spelling of 438750990 in words is "four hundred thirty-eight million, seven hundred fifty thousand, nine hundred ninety".