90912337 has 4 divisors (see below), whose sum is σ = 90974016. Its totient is φ = 90850660.

The previous prime is 90912323. The next prime is 90912347. The reversal of 90912337 is 73321909.

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: 73321909 = 569 ⋅128861.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90912337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90912317) 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, 28573 + ... + 31594.

It is an arithmetic number, because the mean of its divisors is an integer number (22743504).

Almost surely, 2^90912337 is an apocalyptic number.

It is an amenable number.

90912337 is a deficient number, since it is larger than the sum of its proper divisors (61679).

90912337 is a wasteful number, since it uses less digits than its factorization.

90912337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61678.

The product of its (nonzero) digits is 10206, while the sum is 34.

The square root of 90912337 is about 9534.7961173798. The cubic root of 90912337 is about 449.6496647754.

The spelling of 90912337 in words is "ninety million, nine hundred twelve thousand, three hundred thirty-seven".