107981998 has 4 divisors (see below), whose sum is σ = 161973000. Its totient is φ = 53990998.

The previous prime is 107981917. The next prime is 107982001. The reversal of 107981998 is 899189701.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×107981998² = 23320223784144008, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26995498 + ... + 26995501.

It is an arithmetic number, because the mean of its divisors is an integer number (40493250).

Almost surely, 2^107981998 is an apocalyptic number.

107981998 is a deficient number, since it is larger than the sum of its proper divisors (53991002).

107981998 is an equidigital number, since it uses as much as digits as its factorization.

107981998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53991001.

The product of its (nonzero) digits is 326592, while the sum is 52.

The square root of 107981998 is about 10391.4386876890. The cubic root of 107981998 is about 476.1938544964.

The spelling of 107981998 in words is "one hundred seven million, nine hundred eighty-one thousand, nine hundred ninety-eight".