100979990 has 8 divisors (see below), whose sum is σ = 181764000. Its totient is φ = 40391992.

The previous prime is 100979971. The next prime is 100980013. The reversal of 100979990 is 99979001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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, 5048990 + ... + 5049009.

It is an arithmetic number, because the mean of its divisors is an integer number (22720500).

Almost surely, 2^100979990 is an apocalyptic number.

100979990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100979990 is a deficient number, since it is larger than the sum of its proper divisors (80784010).

100979990 is a wasteful number, since it uses less digits than its factorization.

100979990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10098006.

The product of its (nonzero) digits is 45927, while the sum is 44.

The square root of 100979990 is about 10048.8800370987. The cubic root of 100979990 is about 465.6701940428.

The spelling of 100979990 in words is "one hundred million, nine hundred seventy-nine thousand, nine hundred ninety".