5431729 has 8 divisors (see below), whose sum is σ = 5659560. Its totient is φ = 5206656.

The previous prime is 5431697. The next prime is 5431733. The reversal of 5431729 is 9271345.

It can be written as a sum of positive squares in 4 ways, for example, as 490000 + 4941729 = 700^2 + 2223^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 5431729 - 2⁵ = 5431697 is a prime.

It is a d-powerful number, because it can be written as 5 + 4⁴ + 3¹⁴ + 1 + 7⁶ + 2¹⁹ + 9⁴ .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5431729.

It is not an unprimeable number, because it can be changed into a prime (5431799) 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, 3957 + ... + 5149.

It is an arithmetic number, because the mean of its divisors is an integer number (707445).

Almost surely, 2^5431729 is an apocalyptic number.

It is an amenable number.

5431729 is a deficient number, since it is larger than the sum of its proper divisors (227831).

5431729 is a wasteful number, since it uses less digits than its factorization.

5431729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1379.

The product of its digits is 7560, while the sum is 31.

The square root of 5431729 is about 2330.6070024781. The cubic root of 5431729 is about 175.7840088858.

The spelling of 5431729 in words is "five million, four hundred thirty-one thousand, seven hundred twenty-nine".