3442347921 has 8 divisors (see below), whose sum is σ = 4590071680. Its totient is φ = 2294761392.

The previous prime is 3442347919. The next prime is 3442347943. The reversal of 3442347921 is 1297432443.

3442347921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 3442347921 - 2¹ = 3442347919 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 3442347921.

It is not an unprimeable number, because it can be changed into a prime (3442347991) 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, 66771 + ... + 106503.

It is an arithmetic number, because the mean of its divisors is an integer number (573758960).

Almost surely, 2^3442347921 is an apocalyptic number.

It is an amenable number.

3442347921 is a deficient number, since it is larger than the sum of its proper divisors (1147723759).

3442347921 is a wasteful number, since it uses less digits than its factorization.

3442347921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68615.

The product of its digits is 145152, while the sum is 39.

The square root of 3442347921 is about 58671.5256406376. The cubic root of 3442347921 is about 1509.9118292742.

The spelling of 3442347921 in words is "three billion, four hundred forty-two million, three hundred forty-seven thousand, nine hundred twenty-one".