9639930 has 16 divisors (see below), whose sum is σ = 23135904. Its totient is φ = 2570640.

The previous prime is 9639923. The next prime is 9639937. The reversal of 9639930 is 399369.

It is an interprime number because it is at equal distance from previous prime (9639923) and next prime (9639937).

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (9639937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160636 + ... + 160695.

It is an arithmetic number, because the mean of its divisors is an integer number (1445994).

Almost surely, 2^9639930 is an apocalyptic number.

9639930 is an abundant number, since it is smaller than the sum of its proper divisors (13495974).

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

9639930 is a wasteful number, since it uses less digits than its factorization.

9639930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321341.

The product of its (nonzero) digits is 39366, while the sum is 39.

The square root of 9639930 is about 3104.8236664906. The cubic root of 9639930 is about 212.8259726011.

The spelling of 9639930 in words is "nine million, six hundred thirty-nine thousand, nine hundred thirty".