2777993 has 2 divisors, whose sum is σ = 2777994. Its totient is φ = 2777992.

The previous prime is 2777981. The next prime is 2778011. The reversal of 2777993 is 3997772.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2271049 + 506944 = 1507^2 + 712^2 .

It is a cyclic number.

It is not a de Polignac number, because 2777993 - 2⁴ = 2777977 is a prime.

It is a super-3 number, since 3×2777993³ = 64315358668333096971, which contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (2777903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1388996 + 1388997.

It is an arithmetic number, because the mean of its divisors is an integer number (1388997).

2^2777993 is an apocalyptic number.

It is an amenable number.

2777993 is a deficient number, since it is larger than the sum of its proper divisors (1).

2777993 is an equidigital number, since it uses as much as digits as its factorization.

2777993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 166698, while the sum is 44.

The square root of 2777993 is about 1666.7312320827. The cubic root of 2777993 is about 140.5757412989.

It can be divided in two parts, 27779 and 93, that added together give a palindrome (27872).

The spelling of 2777993 in words is "two million, seven hundred seventy-seven thousand, nine hundred ninety-three".