3247429 has 2 divisors, whose sum is σ = 3247430. Its totient is φ = 3247428.

The previous prime is 3247427. The next prime is 3247451. The reversal of 3247429 is 9247423.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3247204 + 225 = 1802^2 + 15^2 .

It is an emirp because it is prime and its reverse (9247423) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3247429 - 2¹ = 3247427 is a prime.

It is a super-2 number, since 2×3247429² = 21091590220082, which contains 22 as substring.

Together with 3247427, it forms a pair of twin primes.

3247429 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 3247429.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3247421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1623714 + 1623715.

It is an arithmetic number, because the mean of its divisors is an integer number (1623715).

Almost surely, 2^3247429 is an apocalyptic number.

It is an amenable number.

3247429 is a deficient number, since it is larger than the sum of its proper divisors (1).

3247429 is an equidigital number, since it uses as much as digits as its factorization.

3247429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 31.

The square root of 3247429 is about 1802.0624295512. The cubic root of 3247429 is about 148.0857337449.

The spelling of 3247429 in words is "three million, two hundred forty-seven thousand, four hundred twenty-nine".