90953689 has 4 divisors (see below), whose sum is σ = 96303924. Its totient is φ = 85603456.

The previous prime is 90953683. The next prime is 90953701. The reversal of 90953689 is 98635909.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 63043600 + 27910089 = 7940^2 + 5283^2 .

It is a cyclic number.

It is not a de Polignac number, because 90953689 - 2⁷ = 90953561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90953683) 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, 2675092 + ... + 2675125.

It is an arithmetic number, because the mean of its divisors is an integer number (24075981).

Almost surely, 2^90953689 is an apocalyptic number.

It is an amenable number.

90953689 is a deficient number, since it is larger than the sum of its proper divisors (5350235).

90953689 is a wasteful number, since it uses less digits than its factorization.

90953689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5350234.

The product of its (nonzero) digits is 524880, while the sum is 49.

The square root of 90953689 is about 9536.9643493095. The cubic root of 90953689 is about 449.7178296878.

The spelling of 90953689 in words is "ninety million, nine hundred fifty-three thousand, six hundred eighty-nine".