9902038 has 4 divisors (see below), whose sum is σ = 14853060. Its totient is φ = 4951018.

The previous prime is 9902023. The next prime is 9902047. The reversal of 9902038 is 8302099.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2475508 + ... + 2475511.

It is an arithmetic number, because the mean of its divisors is an integer number (3713265).

Almost surely, 2^9902038 is an apocalyptic number.

9902038 is a deficient number, since it is larger than the sum of its proper divisors (4951022).

9902038 is a wasteful number, since it uses less digits than its factorization.

9902038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4951021.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 9902038 is about 3146.7503873043. The cubic root of 9902038 is about 214.7376500763.

The spelling of 9902038 in words is "nine million, nine hundred two thousand, thirty-eight".