3400247 has 2 divisors, whose sum is σ = 3400248. Its totient is φ = 3400246.

The previous prime is 3400231. The next prime is 3400273. The reversal of 3400247 is 7420043.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (7420043) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3400247 - 2⁴ = 3400231 is a prime.

It is a super-2 number, since 2×3400247² = 23123359322018, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3400207) 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, 1700123 + 1700124.

It is an arithmetic number, because the mean of its divisors is an integer number (1700124).

Almost surely, 2^3400247 is an apocalyptic number.

3400247 is a deficient number, since it is larger than the sum of its proper divisors (1).

3400247 is an equidigital number, since it uses as much as digits as its factorization.

3400247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 3400247 is about 1843.9758675210. The cubic root of 3400247 is about 150.3731008320.

The spelling of 3400247 in words is "three million, four hundred thousand, two hundred forty-seven".