9977965239 has 8 divisors (see below), whose sum is σ = 14513404032. Its totient is φ = 6047251640.

The previous prime is 9977965211. The next prime is 9977965279. The reversal of 9977965239 is 9325697799.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9977965239 - 2¹² = 9977961143 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9977965239.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9977965279) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151181259 + ... + 151181324.

It is an arithmetic number, because the mean of its divisors is an integer number (1814175504).

Almost surely, 2^9977965239 is an apocalyptic number.

9977965239 is a deficient number, since it is larger than the sum of its proper divisors (4535438793).

9977965239 is a wasteful number, since it uses less digits than its factorization.

9977965239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302362597.

The product of its digits is 57868020, while the sum is 66.

The square root of 9977965239 is about 99889.7654367053. The cubic root of 9977965239 is about 2152.8511112195.

The spelling of 9977965239 in words is "nine billion, nine hundred seventy-seven million, nine hundred sixty-five thousand, two hundred thirty-nine".