902981 has 2 divisors, whose sum is σ = 902982. Its totient is φ = 902980.

The previous prime is 902977. The next prime is 902987. The reversal of 902981 is 189209.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 872356 + 30625 = 934^2 + 175^2 .

It is a cyclic number.

It is not a de Polignac number, because 902981 - 2² = 902977 is a prime.

It is a super-2 number, since 2×902981² = 1630749372722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 902981.

It is not a weakly prime, because it can be changed into another prime (902987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 451490 + 451491.

It is an arithmetic number, because the mean of its divisors is an integer number (451491).

2⁹⁰²⁹⁸¹ is an apocalyptic number.

It is an amenable number.

902981 is a deficient number, since it is larger than the sum of its proper divisors (1).

902981 is an equidigital number, since it uses as much as digits as its factorization.

902981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 902981 is about 950.2531241727. The cubic root of 902981 is about 96.6554181653.

The spelling of 902981 in words is "nine hundred two thousand, nine hundred eighty-one".