9977965238 has 8 divisors (see below), whose sum is σ = 15032882232. Its totient is φ = 4967004496.

The previous prime is 9977965211. The next prime is 9977965279. The reversal of 9977965238 is 8325697799.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10988495 + ... + 10989402.

It is an arithmetic number, because the mean of its divisors is an integer number (1879110279).

Almost surely, 2^9977965238 is an apocalyptic number.

9977965238 is a deficient number, since it is larger than the sum of its proper divisors (5054916994).

9977965238 is a wasteful number, since it uses less digits than its factorization.

9977965238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21978126.

The product of its digits is 51438240, while the sum is 65.

The square root of 9977965238 is about 99889.7654316998. The cubic root of 9977965238 is about 2152.8511111476.

The spelling of 9977965238 in words is "nine billion, nine hundred seventy-seven million, nine hundred sixty-five thousand, two hundred thirty-eight".