671433439 has 8 divisors (see below), whose sum is σ = 684132480. Its totient is φ = 658824600.

The previous prime is 671433421. The next prime is 671433443. The reversal of 671433439 is 934334176.

It is a happy number.

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 671433439 - 2⁵ = 671433407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671433409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7429 + ... + 37390.

It is an arithmetic number, because the mean of its divisors is an integer number (85516560).

Almost surely, 2^671433439 is an apocalyptic number.

671433439 is a deficient number, since it is larger than the sum of its proper divisors (12699041).

671433439 is a wasteful number, since it uses less digits than its factorization.

671433439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45101.

The product of its digits is 163296, while the sum is 40.

The square root of 671433439 is about 25912.0327068333. The cubic root of 671433439 is about 875.6576015504.

The spelling of 671433439 in words is "six hundred seventy-one million, four hundred thirty-three thousand, four hundred thirty-nine".