2039997 has 4 divisors (see below), whose sum is σ = 2720000. Its totient is φ = 1359996.

The previous prime is 2039993. The next prime is 2040019. The reversal of 2039997 is 7999302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2039997 - 2² = 2039993 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2039993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 339997 + ... + 340002.

It is an arithmetic number, because the mean of its divisors is an integer number (680000).

2^2039997 is an apocalyptic number.

It is an amenable number.

2039997 is a deficient number, since it is larger than the sum of its proper divisors (680003).

2039997 is an equidigital number, since it uses as much as digits as its factorization.

2039997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680002.

The product of its (nonzero) digits is 30618, while the sum is 39.

The square root of 2039997 is about 1428.2846354981. The cubic root of 2039997 is about 126.8264519378.

The spelling of 2039997 in words is "two million, thirty-nine thousand, nine hundred ninety-seven".