90599543 has 4 divisors (see below), whose sum is σ = 95367960. Its totient is φ = 85831128.

The previous prime is 90599539. The next prime is 90599549. The reversal of 90599543 is 34599509.

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

It is a cyclic number.

It is not a de Polignac number, because 90599543 - 2² = 90599539 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90599494 and 90599503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90599549) 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, 2384180 + ... + 2384217.

It is an arithmetic number, because the mean of its divisors is an integer number (23841990).

Almost surely, 2^90599543 is an apocalyptic number.

90599543 is a deficient number, since it is larger than the sum of its proper divisors (4768417).

90599543 is a wasteful number, since it uses less digits than its factorization.

90599543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4768416.

The product of its (nonzero) digits is 218700, while the sum is 44.

The square root of 90599543 is about 9518.3792212750. The cubic root of 90599543 is about 449.1333823300.

The spelling of 90599543 in words is "ninety million, five hundred ninety-nine thousand, five hundred forty-three".