9902039 has 4 divisors (see below), whose sum is σ = 11316624. Its totient is φ = 8487456.

The previous prime is 9902023. The next prime is 9902047. The reversal of 9902039 is 9302099.

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

It is a cyclic number.

It is not a de Polignac number, because 9902039 - 2⁴ = 9902023 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9901996 and 9902014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9902089) 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, 707282 + ... + 707295.

It is an arithmetic number, because the mean of its divisors is an integer number (2829156).

Almost surely, 2^9902039 is an apocalyptic number.

9902039 is a deficient number, since it is larger than the sum of its proper divisors (1414585).

9902039 is a wasteful number, since it uses less digits than its factorization.

9902039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1414584.

The product of its (nonzero) digits is 4374, while the sum is 32.

The square root of 9902039 is about 3146.7505461984. The cubic root of 9902039 is about 214.7376573050.

The spelling of 9902039 in words is "nine million, nine hundred two thousand, thirty-nine".