2779231 has 12 divisors (see below), whose sum is σ = 3482472. Its totient is φ = 2198448.

The previous prime is 2779229. The next prime is 2779237. The reversal of 2779231 is 1329772.

It is not a de Polignac number, because 2779231 - 2¹ = 2779229 is a prime.

It is a super-2 number, since 2×2779231² = 15448249902722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2779193 and 2779202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2779237) 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, 1545 + ... + 2818.

It is an arithmetic number, because the mean of its divisors is an integer number (290206).

2^2779231 is an apocalyptic number.

2779231 is a deficient number, since it is larger than the sum of its proper divisors (703241).

2779231 is a wasteful number, since it uses less digits than its factorization.

2779231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4390 (or 4383 counting only the distinct ones).

The product of its digits is 5292, while the sum is 31.

The square root of 2779231 is about 1667.1025763282. The cubic root of 2779231 is about 140.5966205118.

The spelling of 2779231 in words is "two million, seven hundred seventy-nine thousand, two hundred thirty-one".