3396837421 has 2 divisors, whose sum is σ = 3396837422. Its totient is φ = 3396837420.

The previous prime is 3396837343. The next prime is 3396837481. The reversal of 3396837421 is 1247386933.

3396837421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2912221225 + 484616196 = 53965^2 + 22014^2 .

It is a cyclic number.

It is not a de Polignac number, because 3396837421 - 2¹⁹ = 3396313133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3396837481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1698418710 + 1698418711.

It is an arithmetic number, because the mean of its divisors is an integer number (1698418711).

Almost surely, 2^3396837421 is an apocalyptic number.

It is an amenable number.

3396837421 is a deficient number, since it is larger than the sum of its proper divisors (1).

3396837421 is an equidigital number, since it uses as much as digits as its factorization.

3396837421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 653184, while the sum is 46.

The square root of 3396837421 is about 58282.3937480265. The cubic root of 3396837421 is about 1503.2282208906.

The spelling of 3396837421 in words is "three billion, three hundred ninety-six million, eight hundred thirty-seven thousand, four hundred twenty-one".