2039549 has 2 divisors, whose sum is σ = 2039550. Its totient is φ = 2039548.

The previous prime is 2039509. The next prime is 2039561. The reversal of 2039549 is 9459302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1428025 + 611524 = 1195^2 + 782^2 .

It is a cyclic number.

It is not a de Polignac number, because 2039549 - 2²⁰ = 990973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2039509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1019774 + 1019775.

It is an arithmetic number, because the mean of its divisors is an integer number (1019775).

2^2039549 is an apocalyptic number.

It is an amenable number.

2039549 is a deficient number, since it is larger than the sum of its proper divisors (1).

2039549 is an equidigital number, since it uses as much as digits as its factorization.

2039549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 2039549 is about 1428.1277954021. The cubic root of 2039549 is about 126.8171672166.

The spelling of 2039549 in words is "two million, thirty-nine thousand, five hundred forty-nine".