94639999 has 4 divisors (see below), whose sum is σ = 96653664. Its totient is φ = 92626336.

The previous prime is 94639973. The next prime is 94640023. The reversal of 94639999 is 99993649.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99993649 = 7 ⋅14284807.

It is a cyclic number.

It is not a de Polignac number, because 94639999 - 2⁵ = 94639967 is a prime.

It is a Duffinian number.

94639999 is a modest number, since divided by 9999 gives 9463 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (94639199) 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, 1006762 + ... + 1006855.

It is an arithmetic number, because the mean of its divisors is an integer number (24163416).

Almost surely, 2^94639999 is an apocalyptic number.

94639999 is a deficient number, since it is larger than the sum of its proper divisors (2013665).

94639999 is a wasteful number, since it uses less digits than its factorization.

94639999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2013664.

The product of its digits is 4251528, while the sum is 58.

The square root of 94639999 is about 9728.3091542159. The cubic root of 94639999 is about 455.7131657063.

The spelling of 94639999 in words is "ninety-four million, six hundred thirty-nine thousand, nine hundred ninety-nine".