3421309939 has 2 divisors, whose sum is σ = 3421309940. Its totient is φ = 3421309938.

The previous prime is 3421309919. The next prime is 3421309951. The reversal of 3421309939 is 9399031243.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3421309939 - 2⁷ = 3421309811 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3421309895 and 3421309904.

It is not a weakly prime, because it can be changed into another prime (3421309919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1710654969 + 1710654970.

It is an arithmetic number, because the mean of its divisors is an integer number (1710654970).

Almost surely, 2^3421309939 is an apocalyptic number.

3421309939 is a deficient number, since it is larger than the sum of its proper divisors (1).

3421309939 is an equidigital number, since it uses as much as digits as its factorization.

3421309939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 157464, while the sum is 43.

The square root of 3421309939 is about 58491.9647387571. The cubic root of 3421309939 is about 1506.8295889866.

The spelling of 3421309939 in words is "three billion, four hundred twenty-one million, three hundred nine thousand, nine hundred thirty-nine".