9639957 has 16 divisors (see below), whose sum is σ = 13130432. Its totient is φ = 6289920.

The previous prime is 9639947. The next prime is 9639979. The reversal of 9639957 is 7599369.

It is a happy number.

It is not a de Polignac number, because 9639957 - 2⁸ = 9639701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9639907) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45582 + ... + 45792.

It is an arithmetic number, because the mean of its divisors is an integer number (820652).

Almost surely, 2^9639957 is an apocalyptic number.

9639957 is a gapful number since it is divisible by the number (97) formed by its first and last digit.

It is an amenable number.

9639957 is a deficient number, since it is larger than the sum of its proper divisors (3490475).

9639957 is a wasteful number, since it uses less digits than its factorization.

9639957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468.

The product of its digits is 459270, while the sum is 48.

The square root of 9639957 is about 3104.8280145605. The cubic root of 9639957 is about 212.8261712988.

The spelling of 9639957 in words is "nine million, six hundred thirty-nine thousand, nine hundred fifty-seven".