90919085 has 8 divisors (see below), whose sum is σ = 114845280. Its totient is φ = 68907024.

The previous prime is 90919079. The next prime is 90919093. The reversal of 90919085 is 58091909.

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-90919085 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 478427 + ... + 478616.

It is an arithmetic number, because the mean of its divisors is an integer number (14355660).

Almost surely, 2^90919085 is an apocalyptic number.

90919085 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

It is an amenable number.

90919085 is a deficient number, since it is larger than the sum of its proper divisors (23926195).

90919085 is a wasteful number, since it uses less digits than its factorization.

90919085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 957067.

The product of its (nonzero) digits is 29160, while the sum is 41.

The square root of 90919085 is about 9535.1499726014. The cubic root of 90919085 is about 449.6607896347.

The spelling of 90919085 in words is "ninety million, nine hundred nineteen thousand, eighty-five".