2427779 has 2 divisors, whose sum is σ = 2427780. Its totient is φ = 2427778.

The previous prime is 2427773. The next prime is 2427781. The reversal of 2427779 is 9777242.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2427779 is a prime.

It is a super-2 number, since 2×2427779² = 11788221745682, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 2427781, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2427773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1213889 + 1213890.

It is an arithmetic number, because the mean of its divisors is an integer number (1213890).

2^2427779 is an apocalyptic number.

2427779 is a deficient number, since it is larger than the sum of its proper divisors (1).

2427779 is an equidigital number, since it uses as much as digits as its factorization.

2427779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 49392, while the sum is 38.

The square root of 2427779 is about 1558.1331778767. The cubic root of 2427779 is about 134.4011702409.

It can be divided in two parts, 2 and 427779, that multiplied together give a palindrome (855558).

The spelling of 2427779 in words is "two million, four hundred twenty-seven thousand, seven hundred seventy-nine".