118898993 has 4 divisors (see below), whose sum is σ = 118926948. Its totient is φ = 118871040.

The previous prime is 118898971. The next prime is 118899007. The reversal of 118898993 is 399898811.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 399898811 = 13 ⋅30761447.

It can be written as a sum of positive squares in 2 ways, for example, as 87179569 + 31719424 = 9337^2 + 5632^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118898993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118898933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6128 + ... + 16593.

It is an arithmetic number, because the mean of its divisors is an integer number (29731737).

Almost surely, 2^118898993 is an apocalyptic number.

It is an amenable number.

118898993 is a deficient number, since it is larger than the sum of its proper divisors (27955).

118898993 is an equidigital number, since it uses as much as digits as its factorization.

118898993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27954.

The product of its digits is 1119744, while the sum is 56.

The square root of 118898993 is about 10904.0814835547. The cubic root of 118898993 is about 491.7292683416.

The spelling of 118898993 in words is "one hundred eighteen million, eight hundred ninety-eight thousand, nine hundred ninety-three".