3420686444 has 48 divisors (see below), whose sum is σ = 7130812416. Its totient is φ = 1404907200.

The previous prime is 3420686429. The next prime is 3420686449. The reversal of 3420686444 is 4446860243.

3420686444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (3420686449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70274 + ... + 108534.

It is an arithmetic number, because the mean of its divisors is an integer number (148558592).

Almost surely, 2^3420686444 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3420686444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3565406208).

3420686444 is an abundant number, since it is smaller than the sum of its proper divisors (3710125972).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3420686444 is a wasteful number, since it uses less digits than its factorization.

3420686444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38406 (or 38404 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 41.

The square root of 3420686444 is about 58486.6347467522. The cubic root of 3420686444 is about 1506.7380492150.

The spelling of 3420686444 in words is "three billion, four hundred twenty million, six hundred eighty-six thousand, four hundred forty-four".