91939101 has 8 divisors (see below), whose sum is σ = 122637984. Its totient is φ = 61266480.

The previous prime is 91939093. The next prime is 91939103. The reversal of 91939101 is 10193919.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 91939101 - 2³ = 91939093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91939103) 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, 4066 + ... + 14156.

It is an arithmetic number, because the mean of its divisors is an integer number (15329748).

Almost surely, 2^91939101 is an apocalyptic number.

It is an amenable number.

91939101 is a deficient number, since it is larger than the sum of its proper divisors (30698883).

91939101 is a wasteful number, since it uses less digits than its factorization.

91939101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13131.

The product of its (nonzero) digits is 2187, while the sum is 33.

The square root of 91939101 is about 9588.4879412762. The cubic root of 91939101 is about 451.3361129183.

The spelling of 91939101 in words is "ninety-one million, nine hundred thirty-nine thousand, one hundred one".