90357289 has 8 divisors (see below), whose sum is σ = 98758368. Its totient is φ = 81987360.

The previous prime is 90357269. The next prime is 90357299. The reversal of 90357289 is 98275309.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90357289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90357229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1492 + ... + 13525.

It is an arithmetic number, because the mean of its divisors is an integer number (12344796).

Almost surely, 2^90357289 is an apocalyptic number.

It is an amenable number.

90357289 is a deficient number, since it is larger than the sum of its proper divisors (8401079).

90357289 is a wasteful number, since it uses less digits than its factorization.

90357289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15575.

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 90357289 is about 9505.6451122478. The cubic root of 90357289 is about 448.7327126122.

The spelling of 90357289 in words is "ninety million, three hundred fifty-seven thousand, two hundred eighty-nine".