9977965240 has 32 divisors (see below), whose sum is σ = 22599113760. Its totient is φ = 3964752000.

The previous prime is 9977965211. The next prime is 9977965279. The reversal of 9977965240 is 425697799.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 819951 + ... + 832030.

It is an arithmetic number, because the mean of its divisors is an integer number (706222305).

Almost surely, 2^9977965240 is an apocalyptic number.

It is an amenable number.

9977965240 is an abundant number, since it is smaller than the sum of its proper divisors (12621148520).

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

9977965240 is a wasteful number, since it uses less digits than its factorization.

9977965240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1652143 (or 1652139 counting only the distinct ones).

The product of its (nonzero) digits is 8573040, while the sum is 58.

The square root of 9977965240 is about 99889.7654417108. The cubic root of 9977965240 is about 2152.8511112915.

The spelling of 9977965240 in words is "nine billion, nine hundred seventy-seven million, nine hundred sixty-five thousand, two hundred forty".