2789912447 has 4 divisors (see below), whose sum is σ = 3188471376. Its totient is φ = 2391353520.

The previous prime is 2789912429. The next prime is 2789912473. The reversal of 2789912447 is 7442199872.

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 2789912447 - 2¹² = 2789908351 is a prime.

It is a super-2 number, since 2×2789912447² = 15567222923851055618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2789912497) 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, 199279454 + ... + 199279467.

It is an arithmetic number, because the mean of its divisors is an integer number (797117844).

Almost surely, 2^2789912447 is an apocalyptic number.

2789912447 is a deficient number, since it is larger than the sum of its proper divisors (398558929).

2789912447 is an equidigital number, since it uses as much as digits as its factorization.

2789912447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398558928.

The product of its digits is 2032128, while the sum is 53.

The square root of 2789912447 is about 52819.6217991004. The cubic root of 2789912447 is about 1407.7650906351.

The spelling of 2789912447 in words is "two billion, seven hundred eighty-nine million, nine hundred twelve thousand, four hundred forty-seven".