118997 has 4 divisors (see below), whose sum is σ = 125280. Its totient is φ = 112716.

The previous prime is 118973. The next prime is 119027. The reversal of 118997 is 799811.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 799811 = 761 ⋅1051.

It is a cyclic number.

It is not a de Polignac number, because 118997 - 2¹⁰ = 117973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3113 + ... + 3150.

It is an arithmetic number, because the mean of its divisors is an integer number (31320).

2¹¹⁸⁹⁹⁷ is an apocalyptic number.

It is an amenable number.

118997 is a deficient number, since it is larger than the sum of its proper divisors (6283).

118997 is an equidigital number, since it uses as much as digits as its factorization.

118997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6282.

The product of its digits is 4536, while the sum is 35.

The square root of 118997 is about 344.9594179030. The cubic root of 118997 is about 49.1864340063.

The spelling of 118997 in words is "one hundred eighteen thousand, nine hundred ninety-seven".