100379721 has 16 divisors (see below), whose sum is σ = 146857536. Its totient is φ = 60605376.

The previous prime is 100379711. The next prime is 100379723. The reversal of 100379721 is 127973001.

It is not a de Polignac number, because 100379721 - 2²³ = 91991113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100379723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22215 + ... + 26348.

It is an arithmetic number, because the mean of its divisors is an integer number (9178596).

Almost surely, 2^100379721 is an apocalyptic number.

It is an amenable number.

100379721 is a deficient number, since it is larger than the sum of its proper divisors (46477815).

100379721 is a wasteful number, since it uses less digits than its factorization.

100379721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48632.

The product of its (nonzero) digits is 2646, while the sum is 30.

The square root of 100379721 is about 10018.9680606338. The cubic root of 100379721 is about 464.7456442199.

The spelling of 100379721 in words is "one hundred million, three hundred seventy-nine thousand, seven hundred twenty-one".