90774293 has 4 divisors (see below), whose sum is σ = 93702528. Its totient is φ = 87846060.

The previous prime is 90774253. The next prime is 90774323. The reversal of 90774293 is 39247709.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90774293 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 90774293.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90774253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1464071 + ... + 1464132.

It is an arithmetic number, because the mean of its divisors is an integer number (23425632).

Almost surely, 2^90774293 is an apocalyptic number.

It is an amenable number.

90774293 is a deficient number, since it is larger than the sum of its proper divisors (2928235).

90774293 is a wasteful number, since it uses less digits than its factorization.

90774293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2928234.

The product of its (nonzero) digits is 95256, while the sum is 41.

The square root of 90774293 is about 9527.5544081364. The cubic root of 90774293 is about 449.4219623390.

The spelling of 90774293 in words is "ninety million, seven hundred seventy-four thousand, two hundred ninety-three".