90544539 has 8 divisors (see below), whose sum is σ = 121254160. Its totient is φ = 60098976.

The previous prime is 90544477. The next prime is 90544543. The reversal of 90544539 is 93544509.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 90544539 - 2¹⁷ = 90413467 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90544497 and 90544506.

It is not an unprimeable number, because it can be changed into a prime (90544579) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65212 + ... + 66585.

It is an arithmetic number, because the mean of its divisors is an integer number (15156770).

Almost surely, 2^90544539 is an apocalyptic number.

90544539 is a deficient number, since it is larger than the sum of its proper divisors (30709621).

90544539 is a wasteful number, since it uses less digits than its factorization.

90544539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132029.

The product of its (nonzero) digits is 97200, while the sum is 39.

The square root of 90544539 is about 9515.4894251426. The cubic root of 90544539 is about 449.0424726234.

The spelling of 90544539 in words is "ninety million, five hundred forty-four thousand, five hundred thirty-nine".