2039857 has 2 divisors, whose sum is σ = 2039858. Its totient is φ = 2039856.

The previous prime is 2039837. The next prime is 2039867. The reversal of 2039857 is 7589302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1934881 + 104976 = 1391^2 + 324^2 .

It is a cyclic number.

It is not a de Polignac number, because 2039857 - 2¹¹ = 2037809 is a prime.

It is a super-2 number, since 2×2039857² = 8322033160898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2039837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1019928 + 1019929.

It is an arithmetic number, because the mean of its divisors is an integer number (1019929).

2^2039857 is an apocalyptic number.

It is an amenable number.

2039857 is a deficient number, since it is larger than the sum of its proper divisors (1).

2039857 is an equidigital number, since it uses as much as digits as its factorization.

2039857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 2039857 is about 1428.2356248183. The cubic root of 2039857 is about 126.8235506085.

The spelling of 2039857 in words is "two million, thirty-nine thousand, eight hundred fifty-seven".