3494351221 has 2 divisors, whose sum is σ = 3494351222. Its totient is φ = 3494351220.

The previous prime is 3494351209. The next prime is 3494351233. The reversal of 3494351221 is 1221534943.

It is a balanced prime because it is at equal distance from previous prime (3494351209) and next prime (3494351233).

It can be written as a sum of positive squares in only one way, i.e., 2819079025 + 675272196 = 53095^2 + 25986^2 .

It is a cyclic number.

It is not a de Polignac number, because 3494351221 - 2¹⁹ = 3493826933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3494351821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1747175610 + 1747175611.

It is an arithmetic number, because the mean of its divisors is an integer number (1747175611).

Almost surely, 2^3494351221 is an apocalyptic number.

It is an amenable number.

3494351221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3494351221 is an equidigital number, since it uses as much as digits as its factorization.

3494351221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 34.

The square root of 3494351221 is about 59113.0376566794. The cubic root of 3494351221 is about 1517.4772356396.

The spelling of 3494351221 in words is "three billion, four hundred ninety-four million, three hundred fifty-one thousand, two hundred twenty-one".