17990093 has 8 divisors (see below), whose sum is σ = 20658720. Its totient is φ = 15493680.

The previous prime is 17990087. The next prime is 17990107. The reversal of 17990093 is 39009971.

It is a happy number.

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 17990093 - 2²⁴ = 1212877 is a prime.

It is a super-2 number, since 2×17990093² = 647286892297298, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17990023) 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, 42830 + ... + 43247.

It is an arithmetic number, because the mean of its divisors is an integer number (2582340).

Almost surely, 2^17990093 is an apocalyptic number.

It is an amenable number.

17990093 is a deficient number, since it is larger than the sum of its proper divisors (2668627).

17990093 is a wasteful number, since it uses less digits than its factorization.

17990093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86107.

The product of its (nonzero) digits is 15309, while the sum is 38.

The square root of 17990093 is about 4241.4729752764. The cubic root of 17990093 is about 262.0260496990.

The spelling of 17990093 in words is "seventeen million, nine hundred ninety thousand, ninety-three".