9979776 has 48 divisors (see below), whose sum is σ = 28721160. Its totient is φ = 3326208.

The previous prime is 9979771. The next prime is 9979777. The reversal of 9979776 is 6779799.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9979771) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3180 + ... + 5483.

Almost surely, 2^9979776 is an apocalyptic number.

9979776 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

9979776 is an abundant number, since it is smaller than the sum of its proper divisors (18741384).

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

9979776 is a wasteful number, since it uses less digits than its factorization.

9979776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8683 (or 8668 counting only the distinct ones).

The product of its digits is 1500282, while the sum is 54.

The square root of 9979776 is about 3159.0783466068. The cubic root of 9979776 is about 215.2981333596.

The spelling of 9979776 in words is "nine million, nine hundred seventy-nine thousand, seven hundred seventy-six".