2779493 has 2 divisors, whose sum is σ = 2779494. Its totient is φ = 2779492.

The previous prime is 2779489. The next prime is 2779501. The reversal of 2779493 is 3949772.

2779493 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2765569 + 13924 = 1663^2 + 118^2 .

It is a cyclic number.

It is not a de Polignac number, because 2779493 - 2² = 2779489 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2¹¹ + 7⁵ + 7⁶ + 9 + 4¹⁰ + 9² + 3¹³ .

It is a self number, because there is not a number n which added to its sum of digits gives 2779493.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2779423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1389746 + 1389747.

It is an arithmetic number, because the mean of its divisors is an integer number (1389747).

2^2779493 is an apocalyptic number.

It is an amenable number.

2779493 is a deficient number, since it is larger than the sum of its proper divisors (1).

2779493 is an equidigital number, since it uses as much as digits as its factorization.

2779493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 95256, while the sum is 41.

The square root of 2779493 is about 1667.1811539242. The cubic root of 2779493 is about 140.6010384194.

The spelling of 2779493 in words is "two million, seven hundred seventy-nine thousand, four hundred ninety-three".