7997439000 has 256 divisors, whose sum is σ = 25900617600. Its totient is φ = 2052864000.

The previous prime is 7997438971. The next prime is 7997439031. The reversal of 7997439000 is 9347997.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12098670 + ... + 12099330.

Almost surely, 2^7997439000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7997439000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12950308800).

7997439000 is an abundant number, since it is smaller than the sum of its proper divisors (17903178600).

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

7997439000 is a wasteful number, since it uses less digits than its factorization.

7997439000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831 (or 817 counting only the distinct ones).

The product of its (nonzero) digits is 428652, while the sum is 48.

The square root of 7997439000 is about 89428.4015288208. The cubic root of 7997439000 is about 1999.7865605559.

The spelling of 7997439000 in words is "seven billion, nine hundred ninety-seven million, four hundred thirty-nine thousand".