989902 has 8 divisors (see below), whose sum is σ = 1510200. Its totient is φ = 486504.

The previous prime is 989887. The next prime is 989909. The reversal of 989902 is 209989.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989909) by changing a digit.

989902 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4077 + ... + 4312.

It is an arithmetic number, because the mean of its divisors is an integer number (188775).

2⁹⁸⁹⁹⁰² is an apocalyptic number.

989902 is a deficient number, since it is larger than the sum of its proper divisors (520298).

989902 is a wasteful number, since it uses less digits than its factorization.

989902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8450.

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 989902 is about 994.9381890349. The cubic root of 989902 is about 99.6622606052.

It can be divided in two parts, 989 and 902, that added together give a triangular number (1891 = T₆₁).

The spelling of 989902 in words is "nine hundred eighty-nine thousand, nine hundred two".