117987097 has 2 divisors, whose sum is σ = 117987098. Its totient is φ = 117987096.

The previous prime is 117987091. The next prime is 117987101. The reversal of 117987097 is 790789711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115541001 + 2446096 = 10749^2 + 1564^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117987097 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 117987097.

It is not a weakly prime, because it can be changed into another prime (117987091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58993548 + 58993549.

It is an arithmetic number, because the mean of its divisors is an integer number (58993549).

Almost surely, 2^117987097 is an apocalyptic number.

It is an amenable number.

117987097 is a deficient number, since it is larger than the sum of its proper divisors (1).

117987097 is an equidigital number, since it uses as much as digits as its factorization.

117987097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 222264, while the sum is 49.

The square root of 117987097 is about 10862.1865662490. The cubic root of 117987097 is about 490.4689346721.

The spelling of 117987097 in words is "one hundred seventeen million, nine hundred eighty-seven thousand, ninety-seven".