3490421321 has 2 divisors, whose sum is σ = 3490421322. Its totient is φ = 3490421320.

The previous prime is 3490421269. The next prime is 3490421357. The reversal of 3490421321 is 1231240943.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2072070400 + 1418350921 = 45520^2 + 37661^2 .

It is a cyclic number.

It is not a de Polignac number, because 3490421321 - 2⁶ = 3490421257 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (3490426321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1745210660 + 1745210661.

It is an arithmetic number, because the mean of its divisors is an integer number (1745210661).

Almost surely, 2^3490421321 is an apocalyptic number.

It is an amenable number.

3490421321 is a deficient number, since it is larger than the sum of its proper divisors (1).

3490421321 is an equidigital number, since it uses as much as digits as its factorization.

3490421321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 3490421321 is about 59079.7877535118. The cubic root of 3490421321 is about 1516.9081485210.

The spelling of 3490421321 in words is "three billion, four hundred ninety million, four hundred twenty-one thousand, three hundred twenty-one".