100499979 has 8 divisors (see below), whose sum is σ = 137268432. Its totient is φ = 65365760.

The previous prime is 100499977. The next prime is 100499989. The reversal of 100499979 is 979994001.

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

It is a cyclic number.

It is not a de Polignac number, because 100499979 - 2¹ = 100499977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100499977) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 408414 + ... + 408659.

It is an arithmetic number, because the mean of its divisors is an integer number (17158554).

Almost surely, 2^100499979 is an apocalyptic number.

100499979 is a deficient number, since it is larger than the sum of its proper divisors (36768453).

100499979 is an equidigital number, since it uses as much as digits as its factorization.

100499979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817117.

The product of its (nonzero) digits is 183708, while the sum is 48.

The square root of 100499979 is about 10024.9677804969. The cubic root of 100499979 is about 464.9311633563.

The spelling of 100499979 in words is "one hundred million, four hundred ninety-nine thousand, nine hundred seventy-nine".