7627447989 has 96 divisors (see below), whose sum is σ = 13586227200. Its totient is φ = 4026672000.

The previous prime is 7627447981. The next prime is 7627448149. The reversal of 7627447989 is 9897447267.

It is not a de Polignac number, because 7627447989 - 2³ = 7627447981 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7627447981) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 15923452 + ... + 15923930.

It is an arithmetic number, because the mean of its divisors is an integer number (141523200).

Almost surely, 2^7627447989 is an apocalyptic number.

It is an amenable number.

7627447989 is a deficient number, since it is larger than the sum of its proper divisors (5958779211).

7627447989 is a wasteful number, since it uses less digits than its factorization.

7627447989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815 (or 812 counting only the distinct ones).

The product of its digits is 42674688, while the sum is 63.

The square root of 7627447989 is about 87335.2620022405. The cubic root of 7627447989 is about 1968.4592029331.

The spelling of 7627447989 in words is "seven billion, six hundred twenty-seven million, four hundred forty-seven thousand, nine hundred eighty-nine".