7809949443 has 16 divisors (see below), whose sum is σ = 10764056576. Its totient is φ = 5031702720.

The previous prime is 7809949421. The next prime is 7809949451. The reversal of 7809949443 is 3449499087.

It is not a de Polignac number, because 7809949443 - 2⁸ = 7809949187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7809949453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9855 + ... + 125367.

It is an arithmetic number, because the mean of its divisors is an integer number (672753536).

Almost surely, 2^7809949443 is an apocalyptic number.

7809949443 is a deficient number, since it is larger than the sum of its proper divisors (2954107133).

7809949443 is a wasteful number, since it uses less digits than its factorization.

7809949443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116274.

The product of its (nonzero) digits is 7838208, while the sum is 57.

The square root of 7809949443 is about 88373.9183413296. The cubic root of 7809949443 is about 1984.0353577578.

The spelling of 7809949443 in words is "seven billion, eight hundred nine million, nine hundred forty-nine thousand, four hundred forty-three".