90819996 has 48 divisors (see below), whose sum is σ = 220080000. Its totient is φ = 29115072.

The previous prime is 90819991. The next prime is 90819997. The reversal of 90819996 is 69991809.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90819991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 173391 + ... + 173913.

It is an arithmetic number, because the mean of its divisors is an integer number (4585000).

Almost surely, 2^90819996 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90819996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110040000).

90819996 is an abundant number, since it is smaller than the sum of its proper divisors (129260004).

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

90819996 is a wasteful number, since it uses less digits than its factorization.

90819996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1058 (or 1056 counting only the distinct ones).

The product of its (nonzero) digits is 314928, while the sum is 51.

The square root of 90819996 is about 9529.9525707109. The cubic root of 90819996 is about 449.4973746064.

The spelling of 90819996 in words is "ninety million, eight hundred nineteen thousand, nine hundred ninety-six".