97902169 has 2 divisors, whose sum is σ = 97902170. Its totient is φ = 97902168.

The previous prime is 97902157. The next prime is 97902179. The reversal of 97902169 is 96120979.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49070025 + 48832144 = 7005^2 + 6988^2 .

It is a cyclic number.

It is not a de Polignac number, because 97902169 - 2¹⁹ = 97377881 is a prime.

It is a super-2 number, since 2×97902169² = 19169669389809122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (97902179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48951084 + 48951085.

It is an arithmetic number, because the mean of its divisors is an integer number (48951085).

Almost surely, 2^97902169 is an apocalyptic number.

It is an amenable number.

97902169 is a deficient number, since it is larger than the sum of its proper divisors (1).

97902169 is an equidigital number, since it uses as much as digits as its factorization.

97902169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 61236, while the sum is 43.

The square root of 97902169 is about 9894.5524911438. The cubic root of 97902169 is about 460.8901619389.

The spelling of 97902169 in words is "ninety-seven million, nine hundred two thousand, one hundred sixty-nine".