93990493 has 4 divisors (see below), whose sum is σ = 95278108. Its totient is φ = 92702880.

The previous prime is 93990469. The next prime is 93990503. The reversal of 93990493 is 39409939.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21178404 + 72812089 = 4602^2 + 8533^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-93990493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (93990293) 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, 643698 + ... + 643843.

It is an arithmetic number, because the mean of its divisors is an integer number (23819527).

Almost surely, 2^93990493 is an apocalyptic number.

It is an amenable number.

93990493 is a deficient number, since it is larger than the sum of its proper divisors (1287615).

93990493 is a wasteful number, since it uses less digits than its factorization.

93990493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1287614.

The product of its (nonzero) digits is 236196, while the sum is 46.

The square root of 93990493 is about 9694.8694163459. The cubic root of 93990493 is about 454.6682652192.

The spelling of 93990493 in words is "ninety-three million, nine hundred ninety thousand, four hundred ninety-three".