90936841 has 4 divisors (see below), whose sum is σ = 90956800. Its totient is φ = 90916884.

The previous prime is 90936823. The next prime is 90936887. The reversal of 90936841 is 14863909.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14863909 = 19 ⋅782311.

It is a cyclic number.

It is not a de Polignac number, because 90936841 - 2¹¹ = 90934793 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90936794 and 90936803.

It is not an unprimeable number, because it can be changed into a prime (90936341) 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 3 ways as a sum of consecutive naturals, for example, 580 + ... + 13498.

It is an arithmetic number, because the mean of its divisors is an integer number (22739200).

Almost surely, 2^90936841 is an apocalyptic number.

It is an amenable number.

90936841 is a deficient number, since it is larger than the sum of its proper divisors (19959).

90936841 is a wasteful number, since it uses less digits than its factorization.

90936841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19958.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 90936841 is about 9536.0810084646. The cubic root of 90936841 is about 449.6900598269.

The spelling of 90936841 in words is "ninety million, nine hundred thirty-six thousand, eight hundred forty-one".