94999991 has 4 divisors (see below), whose sum is σ = 95105184. Its totient is φ = 94894800.

The previous prime is 94999951. The next prime is 95000011. The reversal of 94999991 is 19999949.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19999949 = 23 ⋅869563.

It is a cyclic number.

It is not a de Polignac number, because 94999991 - 2¹⁸ = 94737847 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 94999991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (94999951) 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, 51230 + ... + 53051.

It is an arithmetic number, because the mean of its divisors is an integer number (23776296).

Almost surely, 2^94999991 is an apocalyptic number.

94999991 is a deficient number, since it is larger than the sum of its proper divisors (105193).

94999991 is a wasteful number, since it uses less digits than its factorization.

94999991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105192.

The product of its digits is 2125764, while the sum is 59.

The square root of 94999991 is about 9746.7938831187. The cubic root of 94999991 is about 456.2902491295.

The spelling of 94999991 in words is "ninety-four million, nine hundred ninety-nine thousand, nine hundred ninety-one".