90677893 has 4 divisors (see below), whose sum is σ = 90759340. Its totient is φ = 90596448.

The previous prime is 90677869. The next prime is 90677911. The reversal of 90677893 is 39877609.

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 7193124 + 83484769 = 2682^2 + 9137^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90677893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90677803) 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, 39030 + ... + 41287.

It is an arithmetic number, because the mean of its divisors is an integer number (22689835).

Almost surely, 2^90677893 is an apocalyptic number.

It is an amenable number.

90677893 is a deficient number, since it is larger than the sum of its proper divisors (81447).

90677893 is a wasteful number, since it uses less digits than its factorization.

90677893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81446.

The product of its (nonzero) digits is 571536, while the sum is 49.

The square root of 90677893 is about 9522.4940535555. The cubic root of 90677893 is about 449.2628144084.

The spelling of 90677893 in words is "ninety million, six hundred seventy-seven thousand, eight hundred ninety-three".