90539019 has 8 divisors (see below), whose sum is σ = 134131920. Its totient is φ = 60359328.

The previous prime is 90538979. The next prime is 90539021. The reversal of 90539019 is 91093509.

It is not a de Polignac number, because 90539019 - 2⁷ = 90538891 is a prime.

It is a super-2 number, since 2×90539019² = 16394627922964722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (90539219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1676622 + ... + 1676675.

It is an arithmetic number, because the mean of its divisors is an integer number (16766490).

Almost surely, 2^90539019 is an apocalyptic number.

90539019 is a deficient number, since it is larger than the sum of its proper divisors (43592901).

90539019 is a wasteful number, since it uses less digits than its factorization.

90539019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3353306 (or 3353300 counting only the distinct ones).

The product of its (nonzero) digits is 10935, while the sum is 36.

The square root of 90539019 is about 9515.1993673280. The cubic root of 90539019 is about 449.0333472255.

The spelling of 90539019 in words is "ninety million, five hundred thirty-nine thousand, nineteen".