9959399 has 4 divisors (see below), whose sum is σ = 10545264. Its totient is φ = 9373536.

The previous prime is 9959393. The next prime is 9959407. The reversal of 9959399 is 9939599.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9939599 = 331 ⋅30029.

It is a cyclic number.

It is not a de Polignac number, because 9959399 - 2⁸ = 9959143 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9959399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9959393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 292907 + ... + 292940.

It is an arithmetic number, because the mean of its divisors is an integer number (2636316).

Almost surely, 2^9959399 is an apocalyptic number.

9959399 is a deficient number, since it is larger than the sum of its proper divisors (585865).

9959399 is a wasteful number, since it uses less digits than its factorization.

9959399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 585864.

The product of its digits is 885735, while the sum is 53.

The square root of 9959399 is about 3155.8515491068. The cubic root of 9959399 is about 215.1514994946.

The spelling of 9959399 in words is "nine million, nine hundred fifty-nine thousand, three hundred ninety-nine".