32890993 has 4 divisors (see below), whose sum is σ = 32902900. Its totient is φ = 32879088.

The previous prime is 32890981. The next prime is 32890997. The reversal of 32890993 is 39909823.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 31270464 + 1620529 = 5592^2 + 1273^2 .

It is a cyclic number.

It is not a de Polignac number, because 32890993 - 2⁵ = 32890961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (32890997) 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, 583 + ... + 8131.

It is an arithmetic number, because the mean of its divisors is an integer number (8225725).

Almost surely, 2^32890993 is an apocalyptic number.

It is an amenable number.

32890993 is a deficient number, since it is larger than the sum of its proper divisors (11907).

32890993 is an equidigital number, since it uses as much as digits as its factorization.

32890993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11906.

The product of its (nonzero) digits is 104976, while the sum is 43.

The square root of 32890993 is about 5735.0669568890. The cubic root of 32890993 is about 320.3998679605.

The spelling of 32890993 in words is "thirty-two million, eight hundred ninety thousand, nine hundred ninety-three".