7126743899 has 4 divisors (see below), whose sum is σ = 7774629720. Its totient is φ = 6478858080.

The previous prime is 7126743889. The next prime is 7126743901. The reversal of 7126743899 is 9983476217.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7126743899 - 2²⁴ = 7109966683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7126743889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 323942894 + ... + 323942915.

It is an arithmetic number, because the mean of its divisors is an integer number (1943657430).

Almost surely, 2^7126743899 is an apocalyptic number.

7126743899 is a deficient number, since it is larger than the sum of its proper divisors (647885821).

7126743899 is a wasteful number, since it uses less digits than its factorization.

7126743899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647885820.

The product of its digits is 4572288, while the sum is 56.

The square root of 7126743899 is about 84420.0444148189. The cubic root of 7126743899 is about 1924.4075445809.

The spelling of 7126743899 in words is "seven billion, one hundred twenty-six million, seven hundred forty-three thousand, eight hundred ninety-nine".