2783279997 has 12 divisors (see below), whose sum is σ = 4037117760. Its totient is φ = 1847754888.

The previous prime is 2783279953. The next prime is 2783280007. The reversal of 2783279997 is 7999723872.

2783279997 is a `hidden beast` number, since 278 + 3 + 279 + 9 + 97 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-2783279997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2783279497) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 644823 + ... + 649124.

It is an arithmetic number, because the mean of its divisors is an integer number (336426480).

Almost surely, 2^2783279997 is an apocalyptic number.

It is an amenable number.

2783279997 is a deficient number, since it is larger than the sum of its proper divisors (1253837763).

2783279997 is a wasteful number, since it uses less digits than its factorization.

2783279997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1294192 (or 1294189 counting only the distinct ones).

The product of its digits is 24004512, while the sum is 63.

The square root of 2783279997 is about 52756.8004810754. The cubic root of 2783279997 is about 1406.6486469681.

The spelling of 2783279997 in words is "two billion, seven hundred eighty-three million, two hundred seventy-nine thousand, nine hundred ninety-seven".