90855965 has 8 divisors (see below), whose sum is σ = 109164888. Its totient is φ = 72592960.

The previous prime is 90855949. The next prime is 90855977. The reversal of 90855965 is 56955809.

It can be written as a sum of positive squares in 4 ways, for example, as 3452164 + 87403801 = 1858^2 + 9349^2 .

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

It is not a de Polignac number, because 90855965 - 2⁴ = 90855949 is a prime.

It is a Duffinian number.

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, 6962 + ... + 15171.

It is an arithmetic number, because the mean of its divisors is an integer number (13645611).

Almost surely, 2^90855965 is an apocalyptic number.

It is an amenable number.

90855965 is a deficient number, since it is larger than the sum of its proper divisors (18308923).

90855965 is a wasteful number, since it uses less digits than its factorization.

90855965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22959.

The product of its (nonzero) digits is 486000, while the sum is 47.

The square root of 90855965 is about 9531.8395391446. The cubic root of 90855965 is about 449.5567074913.

The spelling of 90855965 in words is "ninety million, eight hundred fifty-five thousand, nine hundred sixty-five".