94995721 has 4 divisors (see below), whose sum is σ = 95034132. Its totient is φ = 94957312.

The previous prime is 94995701. The next prime is 94995737. The reversal of 94995721 is 12759949.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 75951225 + 19044496 = 8715^2 + 4364^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-94995721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (94995701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15220 + ... + 20533.

It is an arithmetic number, because the mean of its divisors is an integer number (23758533).

Almost surely, 2^94995721 is an apocalyptic number.

It is an amenable number.

94995721 is a deficient number, since it is larger than the sum of its proper divisors (38411).

94995721 is a wasteful number, since it uses less digits than its factorization.

94995721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38410.

The product of its digits is 204120, while the sum is 46.

The square root of 94995721 is about 9746.5748342687. The cubic root of 94995721 is about 456.2834126778.

The spelling of 94995721 in words is "ninety-four million, nine hundred ninety-five thousand, seven hundred twenty-one".