2539387 has 2 divisors, whose sum is σ = 2539388. Its totient is φ = 2539386.

The previous prime is 2539379. The next prime is 2539393. The reversal of 2539387 is 7839352.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2539387 - 2³ = 2539379 is a prime.

It is a d-powerful number, because it can be written as 2¹⁹ + 5⁹ + 3 + 9 + 3¹⁰ + 8³ + 7⁴ .

2539387 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2539337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1269693 + 1269694.

It is an arithmetic number, because the mean of its divisors is an integer number (1269694).

2^2539387 is an apocalyptic number.

2539387 is a deficient number, since it is larger than the sum of its proper divisors (1).

2539387 is an equidigital number, since it uses as much as digits as its factorization.

2539387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 37.

The square root of 2539387 is about 1593.5454182420. The cubic root of 2539387 is about 136.4299219421.

It can be divided in two parts, 2539 and 387, that added together give a triangular number (2926 = T₇₆).

The spelling of 2539387 in words is "two million, five hundred thirty-nine thousand, three hundred eighty-seven".