90494520841 has 4 divisors (see below), whose sum is σ = 91511313300. Its totient is φ = 89477728384.

The previous prime is 90494520827. The next prime is 90494520847. The reversal of 90494520841 is 14802549409.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 27856945216 + 62637575625 = 166904^2 + 250275^2 .

It is a cyclic number.

It is not a de Polignac number, because 90494520841 - 2¹⁹ = 90493996553 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90494520791 and 90494520800.

It is not an unprimeable number, because it can be changed into a prime (90494520847) 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, 508396096 + ... + 508396273.

It is an arithmetic number, because the mean of its divisors is an integer number (22877828325).

Almost surely, 2^90494520841 is an apocalyptic number.

It is an amenable number.

90494520841 is a deficient number, since it is larger than the sum of its proper divisors (1016792459).

90494520841 is a wasteful number, since it uses less digits than its factorization.

90494520841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1016792458.

The product of its (nonzero) digits is 414720, while the sum is 46.

The spelling of 90494520841 in words is "ninety billion, four hundred ninety-four million, five hundred twenty thousand, eight hundred forty-one".