97699489 has 2 divisors, whose sum is σ = 97699490. Its totient is φ = 97699488.

The previous prime is 97699451. The next prime is 97699519. The reversal of 97699489 is 98499679.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62094400 + 35605089 = 7880^2 + 5967^2 .

It is a cyclic number.

It is not a de Polignac number, because 97699489 - 2⁷ = 97699361 is a prime.

It is a super-2 number, since 2×97699489² = 19090380301722242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (97609489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48849744 + 48849745.

It is an arithmetic number, because the mean of its divisors is an integer number (48849745).

Almost surely, 2^97699489 is an apocalyptic number.

It is an amenable number.

97699489 is a deficient number, since it is larger than the sum of its proper divisors (1).

97699489 is an equidigital number, since it uses as much as digits as its factorization.

97699489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8817984, while the sum is 61.

The square root of 97699489 is about 9884.3051854948. The cubic root of 97699489 is about 460.5718926724.

The spelling of 97699489 in words is "ninety-seven million, six hundred ninety-nine thousand, four hundred eighty-nine".