90323237 has 4 divisors (see below), whose sum is σ = 92245056. Its totient is φ = 88401420.

The previous prime is 90323209. The next prime is 90323239. The reversal of 90323237 is 73232309.

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: 73232309 = 743 ⋅98563.

It is a cyclic number.

It is not a de Polignac number, because 90323237 - 2¹⁶ = 90257701 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 (90323239) 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, 960839 + ... + 960932.

It is an arithmetic number, because the mean of its divisors is an integer number (23061264).

Almost surely, 2^90323237 is an apocalyptic number.

It is an amenable number.

90323237 is a deficient number, since it is larger than the sum of its proper divisors (1921819).

90323237 is a wasteful number, since it uses less digits than its factorization.

90323237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1921818.

The product of its (nonzero) digits is 6804, while the sum is 29.

The square root of 90323237 is about 9503.8537972761. The cubic root of 90323237 is about 448.6763358055.

The spelling of 90323237 in words is "ninety million, three hundred twenty-three thousand, two hundred thirty-seven".