9977964 has 48 divisors (see below), whose sum is σ = 24796800. Its totient is φ = 3113856.

The previous prime is 9977951. The next prime is 9977971. The reversal of 9977964 is 4697799.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24192 + ... + 24600.

It is an arithmetic number, because the mean of its divisors is an integer number (516600).

Almost surely, 2^9977964 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 9977964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12398400).

9977964 is an abundant number, since it is smaller than the sum of its proper divisors (14818836).

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

9977964 is a wasteful number, since it uses less digits than its factorization.

9977964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542 (or 540 counting only the distinct ones).

The product of its digits is 857304, while the sum is 51.

The square root of 9977964 is about 3158.7915410802. The cubic root of 9977964 is about 215.2851022110.

The spelling of 9977964 in words is "nine million, nine hundred seventy-seven thousand, nine hundred sixty-four".