8434138992 has 80 divisors (see below), whose sum is σ = 22036089600. Its totient is φ = 2779577856.

The previous prime is 8434138963. The next prime is 8434139009. The reversal of 8434138992 is 2998314348.

It is a super-2 number, since 2×8434138992² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1554268 + ... + 1559684.

It is an arithmetic number, because the mean of its divisors is an integer number (275451120).

Almost surely, 2^8434138992 is an apocalyptic number.

It is an amenable number.

8434138992 is an abundant number, since it is smaller than the sum of its proper divisors (13601950608).

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

8434138992 is a wasteful number, since it uses less digits than its factorization.

8434138992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5790 (or 5784 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 51.

The square root of 8434138992 is about 91837.5685218201. The cubic root of 8434138992 is about 2035.5428601210.

The spelling of 8434138992 in words is "eight billion, four hundred thirty-four million, one hundred thirty-eight thousand, nine hundred ninety-two".