43799769 has 72 divisors (see below), whose sum is σ = 77385672. Its totient is φ = 23639040.

The previous prime is 43799741. The next prime is 43799779. The reversal of 43799769 is 96799734.

43799769 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 81225 + 43718544 = 285^2 + 6612^2 .

It is not a de Polignac number, because 43799769 - 2⁵ = 43799737 is a prime.

It is a super-2 number, since 2×43799769² = 3836839528906722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (43799729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 717999 + ... + 718059.

It is an arithmetic number, because the mean of its divisors is an integer number (1074801).

Almost surely, 2^43799769 is an apocalyptic number.

It is an amenable number.

43799769 is a deficient number, since it is larger than the sum of its proper divisors (33585903).

43799769 is a wasteful number, since it uses less digits than its factorization.

43799769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135 (or 113 counting only the distinct ones).

The product of its digits is 2571912, while the sum is 54.

The square root of 43799769 is about 6618.1393910978. The cubic root of 43799769 is about 352.4985000691.

The spelling of 43799769 in words is "forty-three million, seven hundred ninety-nine thousand, seven hundred sixty-nine".