100939591 has 8 divisors (see below), whose sum is σ = 107259984. Its totient is φ = 94661760.

The previous prime is 100939549. The next prime is 100939607. The reversal of 100939591 is 195939001.

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 100939591 - 2⁷ = 100939463 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 100939591.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100930591) 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, 5680 + ... + 15301.

It is an arithmetic number, because the mean of its divisors is an integer number (13407498).

Almost surely, 2^100939591 is an apocalyptic number.

100939591 is a deficient number, since it is larger than the sum of its proper divisors (6320393).

100939591 is a wasteful number, since it uses less digits than its factorization.

100939591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21281.

The product of its (nonzero) digits is 10935, while the sum is 37.

The square root of 100939591 is about 10046.8697115072. The cubic root of 100939591 is about 465.6080856339.

The spelling of 100939591 in words is "one hundred million, nine hundred thirty-nine thousand, five hundred ninety-one".