90619944 has 48 divisors (see below), whose sum is σ = 234529920. Its totient is φ = 29148480.

The previous prime is 90619939. The next prime is 90619951. The reversal of 90619944 is 44991609.

It is a junction number, because it is equal to n+sod(n) for n = 90619896 and 90619905.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 259482 + ... + 259830.

It is an arithmetic number, because the mean of its divisors is an integer number (4886040).

Almost surely, 2^90619944 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 90619944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117264960).

90619944 is an abundant number, since it is smaller than the sum of its proper divisors (143909976).

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

90619944 is a wasteful number, since it uses less digits than its factorization.

90619944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738 (or 385 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 90619944 is about 9519.4508244961. The cubic root of 90619944 is about 449.1670914128.

The spelling of 90619944 in words is "ninety million, six hundred nineteen thousand, nine hundred forty-four".