9902445 has 16 divisors (see below), whose sum is σ = 18107520. Its totient is φ = 4526784.

The previous prime is 9902437. The next prime is 9902447. The reversal of 9902445 is 5442099.

It is not a de Polignac number, because 9902445 - 2³ = 9902437 is a prime.

9902445 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9902447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47050 + ... + 47259.

It is an arithmetic number, because the mean of its divisors is an integer number (1131720).

Almost surely, 2^9902445 is an apocalyptic number.

It is an amenable number.

9902445 is a deficient number, since it is larger than the sum of its proper divisors (8205075).

9902445 is a wasteful number, since it uses less digits than its factorization.

9902445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94324.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 9902445 is about 3146.8150565294. The cubic root of 9902445 is about 214.7405921315.

The spelling of 9902445 in words is "nine million, nine hundred two thousand, four hundred forty-five".