2739389 has 2 divisors, whose sum is σ = 2739390. Its totient is φ = 2739388.

The previous prime is 2739383. The next prime is 2739403. The reversal of 2739389 is 9839372.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2544025 + 195364 = 1595^2 + 442^2 .

It is a cyclic number.

It is not a de Polignac number, because 2739389 - 2⁸ = 2739133 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2739383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1369694 + 1369695.

It is an arithmetic number, because the mean of its divisors is an integer number (1369695).

2^2739389 is an apocalyptic number.

It is an amenable number.

2739389 is a deficient number, since it is larger than the sum of its proper divisors (1).

2739389 is an equidigital number, since it uses as much as digits as its factorization.

2739389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 41.

The square root of 2739389 is about 1655.1099661352. The cubic root of 2739389 is about 139.9215376670.

The spelling of 2739389 in words is "two million, seven hundred thirty-nine thousand, three hundred eighty-nine".