90232293 has 4 divisors (see below), whose sum is σ = 120309728. Its totient is φ = 60154860.

The previous prime is 90232291. The next prime is 90232297. The reversal of 90232293 is 39223209.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 39223209 = 3 ⋅13074403.

It is not a de Polignac number, because 90232293 - 2¹ = 90232291 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 90232293.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90232291) 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, 15038713 + ... + 15038718.

It is an arithmetic number, because the mean of its divisors is an integer number (30077432).

Almost surely, 2^90232293 is an apocalyptic number.

It is an amenable number.

90232293 is a deficient number, since it is larger than the sum of its proper divisors (30077435).

90232293 is a wasteful number, since it uses less digits than its factorization.

90232293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30077434.

The product of its (nonzero) digits is 5832, while the sum is 30.

The square root of 90232293 is about 9499.0680069152. The cubic root of 90232293 is about 448.5256985880.

It can be divided in two parts, 90232 and 293, that added together give a triangular number (90525 = T₄₂₅).

The spelling of 90232293 in words is "ninety million, two hundred thirty-two thousand, two hundred ninety-three".