2045969 has 6 divisors (see below), whose sum is σ = 2115090. Its totient is φ = 1979040.

The previous prime is 2045963. The next prime is 2045987. The reversal of 2045969 is 9695402.

It can be written as a sum of positive squares in only one way, i.e., 1537600 + 508369 = 1240^2 + 713^2 .

It is not a de Polignac number, because 2045969 - 2⁸ = 2045713 is a prime.

It is a super-2 number, since 2×2045969² = 8371978297922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2045963) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 104 + ... + 2025.

It is an arithmetic number, because the mean of its divisors is an integer number (352515).

2^2045969 is an apocalyptic number.

It is an amenable number.

2045969 is a deficient number, since it is larger than the sum of its proper divisors (69121).

2045969 is an equidigital number, since it uses as much as digits as its factorization.

2045969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2191 (or 2160 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 2045969 is about 1430.3737273874. The cubic root of 2045969 is about 126.9500909560.

The spelling of 2045969 in words is "two million, forty-five thousand, nine hundred sixty-nine".