90757289 has 8 divisors (see below), whose sum is σ = 103911360. Its totient is φ = 77650416.

The previous prime is 90757229. The next prime is 90757291. The reversal of 90757289 is 98275709.

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-90757289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90757229) 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 7 ways as a sum of consecutive naturals, for example, 7574 + ... + 15455.

It is an arithmetic number, because the mean of its divisors is an integer number (12988920).

Almost surely, 2^90757289 is an apocalyptic number.

It is an amenable number.

90757289 is a deficient number, since it is larger than the sum of its proper divisors (13154071).

90757289 is a wasteful number, since it uses less digits than its factorization.

90757289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23599.

The product of its (nonzero) digits is 317520, while the sum is 47.

The square root of 90757289 is about 9526.6620072300. The cubic root of 90757289 is about 449.3938984162.

The spelling of 90757289 in words is "ninety million, seven hundred fifty-seven thousand, two hundred eighty-nine".