902747989 has 16 divisors (see below), whose sum is σ = 1097147520. Its totient is φ = 731424960.

The previous prime is 902747983. The next prime is 902748001. The reversal of 902747989 is 989747209.

It is a cyclic number.

It is not a de Polignac number, because 902747989 - 2¹⁹ = 902223701 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 (902747983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104697 + ... + 112990.

It is an arithmetic number, because the mean of its divisors is an integer number (68571720).

Almost surely, 2^902747989 is an apocalyptic number.

It is an amenable number.

902747989 is a deficient number, since it is larger than the sum of its proper divisors (194399531).

902747989 is a wasteful number, since it uses less digits than its factorization.

902747989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217740.

The product of its (nonzero) digits is 2286144, while the sum is 55.

The square root of 902747989 is about 30045.7649095509. The cubic root of 902747989 is about 966.4710358905.

The spelling of 902747989 in words is "nine hundred two million, seven hundred forty-seven thousand, nine hundred eighty-nine".