3976739549 has 2 divisors, whose sum is σ = 3976739550. Its totient is φ = 3976739548.

The previous prime is 3976739519. The next prime is 3976739587. The reversal of 3976739549 is 9459376793.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3697248025 + 279491524 = 60805^2 + 16718^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3976739549 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3976739491 and 3976739500.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3976739519) 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, 1988369774 + 1988369775.

It is an arithmetic number, because the mean of its divisors is an integer number (1988369775).

Almost surely, 2^3976739549 is an apocalyptic number.

It is an amenable number.

3976739549 is a deficient number, since it is larger than the sum of its proper divisors (1).

3976739549 is an equidigital number, since it uses as much as digits as its factorization.

3976739549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38578680, while the sum is 62.

The square root of 3976739549 is about 63061.3950765443. The cubic root of 3976739549 is about 1584.3180962794.

The spelling of 3976739549 in words is "three billion, nine hundred seventy-six million, seven hundred thirty-nine thousand, five hundred forty-nine".