3634642439 has 8 divisors (see below), whose sum is σ = 3653538000. Its totient is φ = 3615791616.

The previous prime is 3634642421. The next prime is 3634642441. The reversal of 3634642439 is 9342464363.

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 3634642439 - 2²⁰ = 3633593863 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 3634642439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3634644439) 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, 158312 + ... + 179810.

It is an arithmetic number, because the mean of its divisors is an integer number (456692250).

Almost surely, 2^3634642439 is an apocalyptic number.

3634642439 is a deficient number, since it is larger than the sum of its proper divisors (18895561).

3634642439 is a wasteful number, since it uses less digits than its factorization.

3634642439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22369.

The product of its digits is 1119744, while the sum is 44.

The square root of 3634642439 is about 60287.9958117700. The cubic root of 3634642439 is about 1537.5192587889.

The spelling of 3634642439 in words is "three billion, six hundred thirty-four million, six hundred forty-two thousand, four hundred thirty-nine".