7671727949 has 2 divisors, whose sum is σ = 7671727950. Its totient is φ = 7671727948.

The previous prime is 7671727939. The next prime is 7671727957. The reversal of 7671727949 is 9497271767.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6763911049 + 907816900 = 82243^2 + 30130^2 .

It is a cyclic number.

It is not a de Polignac number, because 7671727949 - 2²⁴ = 7654950733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7671727919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3835863974 + 3835863975.

It is an arithmetic number, because the mean of its divisors is an integer number (3835863975).

Almost surely, 2^7671727949 is an apocalyptic number.

It is an amenable number.

7671727949 is a deficient number, since it is larger than the sum of its proper divisors (1).

7671727949 is an equidigital number, since it uses as much as digits as its factorization.

7671727949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9335088, while the sum is 59.

The square root of 7671727949 is about 87588.4007674532. The cubic root of 7671727949 is about 1972.2610497116.

The spelling of 7671727949 in words is "seven billion, six hundred seventy-one million, seven hundred twenty-seven thousand, nine hundred forty-nine".