90047856 has 20 divisors (see below), whose sum is σ = 232623752. Its totient is φ = 30015936.

The previous prime is 90047851. The next prime is 90047869. The reversal of 90047856 is 65874009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90047851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 937951 + ... + 938046.

Almost surely, 2^90047856 is an apocalyptic number.

It is an amenable number.

90047856 is an abundant number, since it is smaller than the sum of its proper divisors (142575896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90047856 is a wasteful number, since it uses less digits than its factorization.

90047856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1876008 (or 1876002 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 90047856 is about 9489.3548779672. The cubic root of 90047856 is about 448.2198909907.

The spelling of 90047856 in words is "ninety million, forty-seven thousand, eight hundred fifty-six".