3420439920 has 160 divisors (see below), whose sum is σ = 11860669440. Its totient is φ = 905990400.

The previous prime is 3420439909. The next prime is 3420439921. The reversal of 3420439920 is 299340243.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3420439921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 320917 + ... + 331403.

It is an arithmetic number, because the mean of its divisors is an integer number (74129184).

Almost surely, 2^3420439920 is an apocalyptic number.

3420439920 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3420439920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5930334720).

3420439920 is an abundant number, since it is smaller than the sum of its proper divisors (8440229520).

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

3420439920 is a wasteful number, since it uses less digits than its factorization.

3420439920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10660 (or 10648 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The square root of 3420439920 is about 58484.5271845469. The cubic root of 3420439920 is about 1506.7018521904.

The spelling of 3420439920 in words is "three billion, four hundred twenty million, four hundred thirty-nine thousand, nine hundred twenty".