5438607990 has 16 divisors (see below), whose sum is σ = 13052659248. Its totient is φ = 1450295456.

The previous prime is 5438607983. The next prime is 5438608001. The reversal of 5438607990 is 997068345.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90643437 + ... + 90643496.

It is an arithmetic number, because the mean of its divisors is an integer number (815791203).

Almost surely, 2^5438607990 is an apocalyptic number.

5438607990 is an abundant number, since it is smaller than the sum of its proper divisors (7614051258).

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

5438607990 is a wasteful number, since it uses less digits than its factorization.

5438607990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181286943.

The product of its (nonzero) digits is 1632960, while the sum is 51.

The square root of 5438607990 is about 73746.9185118944. The cubic root of 5438607990 is about 1758.5818455058.

The spelling of 5438607990 in words is "five billion, four hundred thirty-eight million, six hundred seven thousand, nine hundred ninety".