90383261 has 4 divisors (see below), whose sum is σ = 94312992. Its totient is φ = 86453532.

The previous prime is 90383257. The next prime is 90383269. The reversal of 90383261 is 16238309.

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: 16238309 = 887 ⋅18307.

It is a cyclic number.

It is not a de Polignac number, because 90383261 - 2² = 90383257 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 (90383269) 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, 1964831 + ... + 1964876.

It is an arithmetic number, because the mean of its divisors is an integer number (23578248).

Almost surely, 2^90383261 is an apocalyptic number.

It is an amenable number.

90383261 is a deficient number, since it is larger than the sum of its proper divisors (3929731).

90383261 is a wasteful number, since it uses less digits than its factorization.

90383261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3929730.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 90383261 is about 9507.0111496726. The cubic root of 90383261 is about 448.7757025752.

The spelling of 90383261 in words is "ninety million, three hundred eighty-three thousand, two hundred sixty-one".