22390993 has 8 divisors (see below), whose sum is σ = 22893696. Its totient is φ = 21894000.

The previous prime is 22390981. The next prime is 22390997. The reversal of 22390993 is 39909322.

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 22390993 - 2¹⁷ = 22259921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22390997) 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, 7048 + ... + 9718.

It is an arithmetic number, because the mean of its divisors is an integer number (2861712).

Almost surely, 2^22390993 is an apocalyptic number.

It is an amenable number.

22390993 is a deficient number, since it is larger than the sum of its proper divisors (502703).

22390993 is a wasteful number, since it uses less digits than its factorization.

22390993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2855.

The product of its (nonzero) digits is 26244, while the sum is 37.

The square root of 22390993 is about 4731.9121927610. The cubic root of 22390993 is about 281.8541614675.

The spelling of 22390993 in words is "twenty-two million, three hundred ninety thousand, nine hundred ninety-three".