101945879 has 4 divisors (see below), whose sum is σ = 116509584. Its totient is φ = 87382176.

The previous prime is 101945873. The next prime is 101945891. The reversal of 101945879 is 978549101.

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

It is not a de Polignac number, because 101945879 - 2⁴ = 101945863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101945873) 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, 7281842 + ... + 7281855.

It is an arithmetic number, because the mean of its divisors is an integer number (29127396).

Almost surely, 2^101945879 is an apocalyptic number.

101945879 is a deficient number, since it is larger than the sum of its proper divisors (14563705).

101945879 is an equidigital number, since it uses as much as digits as its factorization.

101945879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14563704.

The product of its (nonzero) digits is 90720, while the sum is 44.

The square root of 101945879 is about 10096.8251940895. The cubic root of 101945879 is about 467.1502206000.

The spelling of 101945879 in words is "one hundred one million, nine hundred forty-five thousand, eight hundred seventy-nine".