9939960 has 48 divisors (see below), whose sum is σ = 32306040. Its totient is φ = 2650560.

The previous prime is 9939959. The next prime is 9939961. The reversal of 9939960 is 699399.

It is an interprime number because it is at equal distance from previous prime (9939959) and next prime (9939961).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9939961) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13446 + ... + 14165.

Almost surely, 2^9939960 is an apocalyptic number.

9939960 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

9939960 is an abundant number, since it is smaller than the sum of its proper divisors (22366080).

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

9939960 is a wasteful number, since it uses less digits than its factorization.

9939960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27628 (or 27621 counting only the distinct ones).

The product of its (nonzero) digits is 118098, while the sum is 45.

The square root of 9939960 is about 3152.7702104657. The cubic root of 9939960 is about 215.0114289940.

The spelling of 9939960 in words is "nine million, nine hundred thirty-nine thousand, nine hundred sixty".