118397969 has 2 divisors, whose sum is σ = 118397970. Its totient is φ = 118397968.

The previous prime is 118397941. The next prime is 118397977. The reversal of 118397969 is 969793811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65399569 + 52998400 = 8087^2 + 7280^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118397969 is a prime.

It is a super-2 number, since 2×118397969² = 28036158126649922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 118397969.

It is not a weakly prime, because it can be changed into another prime (118397989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59198984 + 59198985.

It is an arithmetic number, because the mean of its divisors is an integer number (59198985).

Almost surely, 2^118397969 is an apocalyptic number.

It is an amenable number.

118397969 is a deficient number, since it is larger than the sum of its proper divisors (1).

118397969 is an equidigital number, since it uses as much as digits as its factorization.

118397969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 734832, while the sum is 53.

The square root of 118397969 is about 10881.0830802820. The cubic root of 118397969 is about 491.0376027382.

The spelling of 118397969 in words is "one hundred eighteen million, three hundred ninety-seven thousand, nine hundred sixty-nine".