2689923449 has 16 divisors (see below), whose sum is σ = 2855034000. Its totient is φ = 2529838080.

The previous prime is 2689923427. The next prime is 2689923463. The reversal of 2689923449 is 9443299862.

It is a happy number.

2689923449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 11343424 + 2678580025 = 3368^2 + 51755^2 .

It is a cyclic number.

It is not a de Polignac number, because 2689923449 - 2⁸ = 2689923193 is a prime.

It is a super-2 number, since 2×2689923449² = 14471376322960111202, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2689923394 and 2689923403.

It is not an unprimeable number, because it can be changed into a prime (2689923409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 984317 + ... + 987045.

It is an arithmetic number, because the mean of its divisors is an integer number (178439625).

Almost surely, 2^2689923449 is an apocalyptic number.

2689923449 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2689923449 is a deficient number, since it is larger than the sum of its proper divisors (165110551).

2689923449 is a wasteful number, since it uses less digits than its factorization.

2689923449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3628.

The product of its digits is 6718464, while the sum is 56.

The square root of 2689923449 is about 51864.4719340706. The cubic root of 2689923449 is about 1390.7422237211.

The spelling of 2689923449 in words is "two billion, six hundred eighty-nine million, nine hundred twenty-three thousand, four hundred forty-nine".