531890099 has 4 divisors (see below), whose sum is σ = 572804736. Its totient is φ = 490975464.

The previous prime is 531890081. The next prime is 531890119. The reversal of 531890099 is 990098135.

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 531890099 - 2¹⁶ = 531824563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (531898099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20457299 + ... + 20457324.

It is an arithmetic number, because the mean of its divisors is an integer number (143201184).

Almost surely, 2^531890099 is an apocalyptic number.

531890099 is a deficient number, since it is larger than the sum of its proper divisors (40914637).

531890099 is a wasteful number, since it uses less digits than its factorization.

531890099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40914636.

The product of its (nonzero) digits is 87480, while the sum is 44.

The square root of 531890099 is about 23062.7426599700. The cubic root of 531890099 is about 810.2281016889.

The spelling of 531890099 in words is "five hundred thirty-one million, eight hundred ninety thousand, ninety-nine".