90836986 has 12 divisors (see below), whose sum is σ = 143805402. Its totient is φ = 43027704.

The previous prime is 90836983. The next prime is 90836987. The reversal of 90836986 is 68963809.

It can be written as a sum of positive squares in only one way, i.e., 90611361 + 225625 = 9519^2 + 475^2 .

It is a zygodrome in base 4.

It is not an unprimeable number, because it can be changed into a prime (90836981) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 62185 + ... + 63628.

Almost surely, 2^90836986 is an apocalyptic number.

90836986 is a deficient number, since it is larger than the sum of its proper divisors (52968416).

90836986 is a wasteful number, since it uses less digits than its factorization.

90836986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125853 (or 125834 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 49.

The square root of 90836986 is about 9530.8439290548. The cubic root of 90836986 is about 449.5254025171.

The spelling of 90836986 in words is "ninety million, eight hundred thirty-six thousand, nine hundred eighty-six".