90939193 has 8 divisors (see below), whose sum is σ = 92174112. Its totient is φ = 89711616.

The previous prime is 90939169. The next prime is 90939203. The reversal of 90939193 is 39193909.

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 90939193 - 2⁵ = 90939161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90939133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25846 + ... + 29152.

It is an arithmetic number, because the mean of its divisors is an integer number (11521764).

Almost surely, 2^90939193 is an apocalyptic number.

It is an amenable number.

90939193 is a deficient number, since it is larger than the sum of its proper divisors (1234919).

90939193 is a wasteful number, since it uses less digits than its factorization.

90939193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3671.

The product of its (nonzero) digits is 59049, while the sum is 43.

The square root of 90939193 is about 9536.2043287673. The cubic root of 90939193 is about 449.6939367371.

The spelling of 90939193 in words is "ninety million, nine hundred thirty-nine thousand, one hundred ninety-three".