90384539 has 16 divisors (see below), whose sum is σ = 109075200. Its totient is φ = 73164384.

The previous prime is 90384533. The next prime is 90384559. The reversal of 90384539 is 93548309.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90384539 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 90384496 and 90384505.

It is not an unprimeable number, because it can be changed into a prime (90384533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50864 + ... + 52610.

It is an arithmetic number, because the mean of its divisors is an integer number (6817200).

Almost surely, 2^90384539 is an apocalyptic number.

90384539 is a deficient number, since it is larger than the sum of its proper divisors (18690661).

90384539 is a wasteful number, since it uses less digits than its factorization.

90384539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2162.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 90384539 is about 9507.0783629883. The cubic root of 90384539 is about 448.7778177628. Note that the first 3 decimals are identical.

The spelling of 90384539 in words is "ninety million, three hundred eighty-four thousand, five hundred thirty-nine".