90901494844 has 24 divisors (see below), whose sum is σ = 159257589120. Its totient is φ = 45399362736.

The previous prime is 90901494833. The next prime is 90901494851. The reversal of 90901494844 is 44849410909.

It is a super-4 number, since 4×90901494844⁴ (a number of 45 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3.

It is a junction number, because it is equal to n+sod(n) for n = 90901494791 and 90901494800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21005809 + ... + 21010135.

It is an arithmetic number, because the mean of its divisors is an integer number (6635732880).

Almost surely, 2^90901494844 is an apocalyptic number.

It is an amenable number.

90901494844 is a deficient number, since it is larger than the sum of its proper divisors (68356094276).

90901494844 is a wasteful number, since it uses less digits than its factorization.

90901494844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9057 (or 9055 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 52.

The spelling of 90901494844 in words is "ninety billion, nine hundred one million, four hundred ninety-four thousand, eight hundred forty-four".