2039965 has 4 divisors (see below), whose sum is σ = 2447964. Its totient is φ = 1631968.

The previous prime is 2039957. The next prime is 2039971. The reversal of 2039965 is 5699302.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 509796 + 1530169 = 714^2 + 1237^2 .

It is a cyclic number.

It is not a de Polignac number, because 2039965 - 2³ = 2039957 is a prime.

It is a super-2 number, since 2×2039965² = 8322914402450, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2039965.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 203992 + ... + 204001.

It is an arithmetic number, because the mean of its divisors is an integer number (611991).

2^2039965 is an apocalyptic number.

It is an amenable number.

2039965 is a deficient number, since it is larger than the sum of its proper divisors (407999).

2039965 is an equidigital number, since it uses as much as digits as its factorization.

2039965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407998.

The product of its (nonzero) digits is 14580, while the sum is 34.

The square root of 2039965 is about 1428.2734332053. The cubic root of 2039965 is about 126.8257887885.

The spelling of 2039965 in words is "two million, thirty-nine thousand, nine hundred sixty-five".