3391783421 has 16 divisors (see below), whose sum is σ = 3788055600. Its totient is φ = 3015387648.

The previous prime is 3391783397. The next prime is 3391783429. The reversal of 3391783421 is 1243871933.

3391783421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 64224196 + 3327559225 = 8014^2 + 57685^2 .

It is not a de Polignac number, because 3391783421 - 2⁶ = 3391783357 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 (3391783429) 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, 143195 + ... + 165191.

It is an arithmetic number, because the mean of its divisors is an integer number (236753475).

Almost surely, 2^3391783421 is an apocalyptic number.

It is an amenable number.

3391783421 is a deficient number, since it is larger than the sum of its proper divisors (396272179).

3391783421 is a wasteful number, since it uses less digits than its factorization.

3391783421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22448.

The product of its digits is 108864, while the sum is 41.

The square root of 3391783421 is about 58239.0197462148. The cubic root of 3391783421 is about 1502.4823225246.

The spelling of 3391783421 in words is "three billion, three hundred ninety-one million, seven hundred eighty-three thousand, four hundred twenty-one".