3949297543 has 2 divisors, whose sum is σ = 3949297544. Its totient is φ = 3949297542.

The previous prime is 3949297519. The next prime is 3949297549. The reversal of 3949297543 is 3457929493.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3949297543 - 2⁵ = 3949297511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3949297549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1974648771 + 1974648772.

It is an arithmetic number, because the mean of its divisors is an integer number (1974648772).

Almost surely, 2^3949297543 is an apocalyptic number.

3949297543 is a deficient number, since it is larger than the sum of its proper divisors (1).

3949297543 is an equidigital number, since it uses as much as digits as its factorization.

3949297543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7348320, while the sum is 55.

The square root of 3949297543 is about 62843.4367535704. The cubic root of 3949297543 is about 1580.6654173913.

The spelling of 3949297543 in words is "three billion, nine hundred forty-nine million, two hundred ninety-seven thousand, five hundred forty-three".