100993901 has 4 divisors (see below), whose sum is σ = 101025852. Its totient is φ = 100961952.

The previous prime is 100993891. The next prime is 100993909. The reversal of 100993901 is 109399001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 109399001 = 71 ⋅1540831.

It can be written as a sum of positive squares in 2 ways, for example, as 60684100 + 40309801 = 7790^2 + 6349^2 .

It is a cyclic number.

It is not a de Polignac number, because 100993901 - 2¹⁴ = 100977517 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 (100993909) 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, 10640 + ... + 17753.

It is an arithmetic number, because the mean of its divisors is an integer number (25256463).

Almost surely, 2^100993901 is an apocalyptic number.

It is an amenable number.

100993901 is a deficient number, since it is larger than the sum of its proper divisors (31951).

100993901 is an equidigital number, since it uses as much as digits as its factorization.

100993901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31950.

The product of its (nonzero) digits is 2187, while the sum is 32.

The square root of 100993901 is about 10049.5721799488. The cubic root of 100993901 is about 465.6915766310.

The spelling of 100993901 in words is "one hundred million, nine hundred ninety-three thousand, nine hundred one".