90049850 has 48 divisors (see below), whose sum is σ = 193487616. Its totient is φ = 30816000.

The previous prime is 90049849. The next prime is 90049859. The reversal of 90049850 is 5894009.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 90049850.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90049859) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4535 + ... + 14165.

It is an arithmetic number, because the mean of its divisors is an integer number (4030992).

Almost surely, 2^90049850 is an apocalyptic number.

90049850 is an abundant number, since it is smaller than the sum of its proper divisors (103437766).

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

90049850 is a wasteful number, since it uses less digits than its factorization.

90049850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9671 (or 9666 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 90049850 is about 9489.4599424836. The cubic root of 90049850 is about 448.2231993940.

The spelling of 90049850 in words is "ninety million, forty-nine thousand, eight hundred fifty".