531739689 has 16 divisors (see below), whose sum is σ = 768395712. Its totient is φ = 325136448.

The previous prime is 531739633. The next prime is 531739697. The reversal of 531739689 is 986937135.

It is not a de Polignac number, because 531739689 - 2⁷ = 531739561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (531739699) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37299 + ... + 49544.

It is an arithmetic number, because the mean of its divisors is an integer number (48024732).

Almost surely, 2^531739689 is an apocalyptic number.

It is an amenable number.

531739689 is a deficient number, since it is larger than the sum of its proper divisors (236656023).

531739689 is a wasteful number, since it uses less digits than its factorization.

531739689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87016.

The product of its digits is 1224720, while the sum is 51.

The square root of 531739689 is about 23059.4815423071. The cubic root of 531739689 is about 810.1517213125.

The spelling of 531739689 in words is "five hundred thirty-one million, seven hundred thirty-nine thousand, six hundred eighty-nine".