90023193 has 12 divisors (see below), whose sum is σ = 140036260. Its totient is φ = 55398816.

The previous prime is 90023191. The next prime is 90023201. The reversal of 90023193 is 39132009.

It can be written as a sum of positive squares in 2 ways, for example, as 31775769 + 58247424 = 5637^2 + 7632^2 .

It is not a de Polignac number, because 90023193 - 2¹ = 90023191 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90023191) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 384598 + ... + 384831.

Almost surely, 2^90023193 is an apocalyptic number.

It is an amenable number.

90023193 is a deficient number, since it is larger than the sum of its proper divisors (50013067).

90023193 is a wasteful number, since it uses less digits than its factorization.

90023193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769448 (or 769445 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 27.

The square root of 90023193 is about 9488.0552801931. The cubic root of 90023193 is about 448.1789666162.

The spelling of 90023193 in words is "ninety million, twenty-three thousand, one hundred ninety-three".