9902399 has 8 divisors (see below), whose sum is σ = 10824240. Its totient is φ = 9003456.

The previous prime is 9902359. The next prime is 9902411. The reversal of 9902399 is 9932099.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9902399 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 (9902359) 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, 4814 + ... + 6555.

It is an arithmetic number, because the mean of its divisors is an integer number (1353030).

Almost surely, 2^9902399 is an apocalyptic number.

9902399 is a deficient number, since it is larger than the sum of its proper divisors (921841).

9902399 is a wasteful number, since it uses less digits than its factorization.

9902399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11449.

The product of its (nonzero) digits is 39366, while the sum is 41.

The square root of 9902399 is about 3146.8077475435. The cubic root of 9902399 is about 214.7402596182.

It can be divided in two parts, 9902 and 399, that added together give a palindrome (10301).

The spelling of 9902399 in words is "nine million, nine hundred two thousand, three hundred ninety-nine".