9902061 has 16 divisors (see below), whose sum is σ = 15798720. Its totient is φ = 6093360.

The previous prime is 9902047. The next prime is 9902089. The reversal of 9902061 is 1602099.

It is a happy number.

It is not a de Polignac number, because 9902061 - 2¹⁰ = 9901037 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9902861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13755 + ... + 14456.

It is an arithmetic number, because the mean of its divisors is an integer number (987420).

Almost surely, 2^9902061 is an apocalyptic number.

It is an amenable number.

9902061 is a deficient number, since it is larger than the sum of its proper divisors (5896659).

9902061 is a wasteful number, since it uses less digits than its factorization.

9902061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28233 (or 28227 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 9902061 is about 3146.7540418660. The cubic root of 9902061 is about 214.7378163371.

The spelling of 9902061 in words is "nine million, nine hundred two thousand, sixty-one".