90993722 has 8 divisors (see below), whose sum is σ = 137565696. Its totient is φ = 45138492.

The previous prime is 90993703. The next prime is 90993743. The reversal of 90993722 is 22739909.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 90993722.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178868 + ... + 179375.

It is an arithmetic number, because the mean of its divisors is an integer number (17195712).

Almost surely, 2^90993722 is an apocalyptic number.

90993722 is a deficient number, since it is larger than the sum of its proper divisors (46571974).

90993722 is a wasteful number, since it uses less digits than its factorization.

90993722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358372.

The product of its (nonzero) digits is 61236, while the sum is 41.

The square root of 90993722 is about 9539.0629518837. The cubic root of 90993722 is about 449.7838006719.

It can be divided in two parts, 9099 and 3722, that added together give a palindrome (12821).

The spelling of 90993722 in words is "ninety million, nine hundred ninety-three thousand, seven hundred twenty-two".