2789400043 has 4 divisors (see below), whose sum is σ = 2793633480. Its totient is φ = 2785166608.

The previous prime is 2789400037. The next prime is 2789400071. The reversal of 2789400043 is 3400049872.

It is a happy number.

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 2789400043 - 2⁹ = 2789399531 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2789399975 and 2789400011.

It is not an unprimeable number, because it can be changed into a prime (2789400083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2115730 + ... + 2117047.

It is an arithmetic number, because the mean of its divisors is an integer number (698408370).

Almost surely, 2^2789400043 is an apocalyptic number.

2789400043 is a deficient number, since it is larger than the sum of its proper divisors (4233437).

2789400043 is an equidigital number, since it uses as much as digits as its factorization.

2789400043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4233436.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 2789400043 is about 52814.7710683290. The cubic root of 2789400043 is about 1407.6789005194.

The spelling of 2789400043 in words is "two billion, seven hundred eighty-nine million, four hundred thousand, forty-three".