2039697 has 18 divisors (see below), whose sum is σ = 3240146. Its totient is φ = 1235520.

The previous prime is 2039671. The next prime is 2039731. The reversal of 2039697 is 7969302.

It can be written as a sum of positive squares in only one way, i.e., 1185921 + 853776 = 1089^2 + 924^2 .

It is not a de Polignac number, because 2039697 - 2⁶ = 2039633 is a prime.

It is a Duffinian number.

2039697 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2039647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 153 + ... + 2025.

2^2039697 is an apocalyptic number.

It is an amenable number.

2039697 is a deficient number, since it is larger than the sum of its proper divisors (1200449).

2039697 is a wasteful number, since it uses less digits than its factorization.

2039697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1901 (or 1887 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The square root of 2039697 is about 1428.1796105532. The cubic root of 2039697 is about 126.8202346409.

The spelling of 2039697 in words is "two million, thirty-nine thousand, six hundred ninety-seven".