94040921 has 16 divisors (see below), whose sum is σ = 105734160. Its totient is φ = 83066880.

The previous prime is 94040917. The next prime is 94040941. The reversal of 94040921 is 12904049.

It can be written as a sum of positive squares in 8 ways, for example, as 15523600 + 78517321 = 3940^2 + 8861^2 .

It is not a de Polignac number, because 94040921 - 2² = 94040917 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (94040941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26585 + ... + 29913.

It is an arithmetic number, because the mean of its divisors is an integer number (6608385).

Almost surely, 2^94040921 is an apocalyptic number.

It is an amenable number.

94040921 is a deficient number, since it is larger than the sum of its proper divisors (11693239).

94040921 is a wasteful number, since it uses less digits than its factorization.

94040921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3436.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 94040921 is about 9697.4698246501. The cubic root of 94040921 is about 454.7495639099.

The spelling of 94040921 in words is "ninety-four million, forty thousand, nine hundred twenty-one".