40094221 has 8 divisors (see below), whose sum is σ = 41952384. Its totient is φ = 38245680.

The previous prime is 40094213. The next prime is 40094227. The reversal of 40094221 is 12249004.

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

It is a cyclic number.

It is not a de Polignac number, because 40094221 - 2³ = 40094213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40094192 and 40094201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40094227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6936 + ... + 11326.

It is an arithmetic number, because the mean of its divisors is an integer number (5244048).

Almost surely, 2^40094221 is an apocalyptic number.

It is an amenable number.

40094221 is a deficient number, since it is larger than the sum of its proper divisors (1858163).

40094221 is a wasteful number, since it uses less digits than its factorization.

40094221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4811.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 40094221 is about 6331.9997631080. Note that the first 3 decimals coincide. The cubic root of 40094221 is about 342.2635048436.

The spelling of 40094221 in words is "forty million, ninety-four thousand, two hundred twenty-one".