94420090 has 8 divisors (see below), whose sum is σ = 169956180. Its totient is φ = 37768032.

The previous prime is 94420061. The next prime is 94420093. The reversal of 94420090 is 9002449.

It is a Cunningham number, because it is equal to 9717²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 94420089 + 1 = 9717^2 + 1^2 .

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

It is not an unprimeable number, because it can be changed into a prime (94420093) 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, 4720995 + ... + 4721014.

Almost surely, 2^94420090 is an apocalyptic number.

94420090 is a deficient number, since it is larger than the sum of its proper divisors (75536090).

94420090 is a wasteful number, since it uses less digits than its factorization.

94420090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9442016.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 94420090 is about 9717.0000514562. Note that the first 4 decimals coincide. The cubic root of 94420090 is about 455.3599213085.

The spelling of 94420090 in words is "ninety-four million, four hundred twenty thousand, ninety".