90849886 has 4 divisors (see below), whose sum is σ = 136274832. Its totient is φ = 45424942.

The previous prime is 90849881. The next prime is 90849907. The reversal of 90849886 is 68894809.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 68894809 = 47 ⋅1465847.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90849881) 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 as a sum of consecutive naturals, namely, 22712470 + ... + 22712473.

It is an arithmetic number, because the mean of its divisors is an integer number (34068708).

Almost surely, 2^90849886 is an apocalyptic number.

90849886 is a deficient number, since it is larger than the sum of its proper divisors (45424946).

90849886 is a wasteful number, since it uses less digits than its factorization.

90849886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45424945.

The product of its (nonzero) digits is 995328, while the sum is 52.

The square root of 90849886 is about 9531.5206551735. The cubic root of 90849886 is about 449.5466809393.

The spelling of 90849886 in words is "ninety million, eight hundred forty-nine thousand, eight hundred eighty-six".