9979432 has 8 divisors (see below), whose sum is σ = 18711450. Its totient is φ = 4989712.

The previous prime is 9979399. The next prime is 9979433. The reversal of 9979432 is 2349799.

It can be written as a sum of positive squares in only one way, i.e., 7650756 + 2328676 = 2766^2 + 1526^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (9979433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 623707 + ... + 623722.

Almost surely, 2^9979432 is an apocalyptic number.

It is an amenable number.

9979432 is a deficient number, since it is larger than the sum of its proper divisors (8732018).

9979432 is a wasteful number, since it uses less digits than its factorization.

9979432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1247435 (or 1247431 counting only the distinct ones).

The product of its digits is 122472, while the sum is 43.

The square root of 9979432 is about 3159.0238998779. The cubic root of 9979432 is about 215.2956595763.

The spelling of 9979432 in words is "nine million, nine hundred seventy-nine thousand, four hundred thirty-two".