902989 has 4 divisors (see below), whose sum is σ = 956124. Its totient is φ = 849856.

The previous prime is 902987. The next prime is 903017. The reversal of 902989 is 989209.

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

It can be written as a sum of positive squares in 2 ways, for example, as 792100 + 110889 = 890^2 + 333^2 .

It is a cyclic number.

It is not a de Polignac number, because 902989 - 2¹ = 902987 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (902981) 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, 26542 + ... + 26575.

It is an arithmetic number, because the mean of its divisors is an integer number (239031).

2⁹⁰²⁹⁸⁹ is an apocalyptic number.

It is an amenable number.

902989 is a deficient number, since it is larger than the sum of its proper divisors (53135).

902989 is a wasteful number, since it uses less digits than its factorization.

902989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53134.

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

The square root of 902989 is about 950.2573335681. The cubic root of 902989 is about 96.6557036054.

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

The spelling of 902989 in words is "nine hundred two thousand, nine hundred eighty-nine".