101992379 has 4 divisors (see below), whose sum is σ = 104480040. Its totient is φ = 99504720.

The previous prime is 101992369. The next prime is 101992417. The reversal of 101992379 is 973299101.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101992379 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 2487619 = 101992379 / (1 + 0 + 1 + 9 + 9 + 2 + 3 + 7 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101992339) 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, 1243769 + ... + 1243850.

It is an arithmetic number, because the mean of its divisors is an integer number (26120010).

Almost surely, 2^101992379 is an apocalyptic number.

101992379 is a deficient number, since it is larger than the sum of its proper divisors (2487661).

101992379 is an equidigital number, since it uses as much as digits as its factorization.

101992379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2487660.

The product of its (nonzero) digits is 30618, while the sum is 41.

The square root of 101992379 is about 10099.1276355931. The cubic root of 101992379 is about 467.2212360041.

The spelling of 101992379 in words is "one hundred one million, nine hundred ninety-two thousand, three hundred seventy-nine".