7849666423 has 2 divisors, whose sum is σ = 7849666424. Its totient is φ = 7849666422.

The previous prime is 7849666397. The next prime is 7849666427. The reversal of 7849666423 is 3246669487.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7849666423 is a prime.

It is a super-2 number, since 2×7849666423² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7849666427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3924833211 + 3924833212.

It is an arithmetic number, because the mean of its divisors is an integer number (3924833212).

Almost surely, 2^7849666423 is an apocalyptic number.

7849666423 is a deficient number, since it is larger than the sum of its proper divisors (1).

7849666423 is an equidigital number, since it uses as much as digits as its factorization.

7849666423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10450944, while the sum is 55.

The square root of 7849666423 is about 88598.3432294307. The cubic root of 7849666423 is about 1987.3928994039.

The spelling of 7849666423 in words is "seven billion, eight hundred forty-nine million, six hundred sixty-six thousand, four hundred twenty-three".