5431639 has 8 divisors (see below), whose sum is σ = 5610528. Its totient is φ = 5255040.

The previous prime is 5431627. The next prime is 5431661. The reversal of 5431639 is 9361345.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5431639 is a prime.

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 5431639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5431609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5134 + ... + 6100.

It is an arithmetic number, because the mean of its divisors is an integer number (701316).

Almost surely, 2^5431639 is an apocalyptic number.

5431639 is a deficient number, since it is larger than the sum of its proper divisors (178889).

5431639 is a wasteful number, since it uses less digits than its factorization.

5431639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1145.

The product of its digits is 9720, while the sum is 31.

The square root of 5431639 is about 2330.5876941235. The cubic root of 5431639 is about 175.7830380072.

The spelling of 5431639 in words is "five million, four hundred thirty-one thousand, six hundred thirty-nine".