3400947491 has 2 divisors, whose sum is σ = 3400947492. Its totient is φ = 3400947490.

The previous prime is 3400947469. The next prime is 3400947533. The reversal of 3400947491 is 1947490043.

It is a weak prime.

It is an emirp because it is prime and its reverse (1947490043) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3400947491 is a prime.

It is not a weakly prime, because it can be changed into another prime (3400947191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1700473745 + 1700473746.

It is an arithmetic number, because the mean of its divisors is an integer number (1700473746).

Almost surely, 2^3400947491 is an apocalyptic number.

3400947491 is a deficient number, since it is larger than the sum of its proper divisors (1).

3400947491 is an equidigital number, since it uses as much as digits as its factorization.

3400947491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 3400947491 is about 58317.6430507955. The cubic root of 3400947491 is about 1503.8342633394.

The spelling of 3400947491 in words is "three billion, four hundred million, nine hundred forty-seven thousand, four hundred ninety-one".