2897129 has 4 divisors (see below), whose sum is σ = 2997060. Its totient is φ = 2797200.

The previous prime is 2897119. The next prime is 2897131. The reversal of 2897129 is 9217982.

2897129 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2319529 + 577600 = 1523^2 + 760^2 .

It is a cyclic number.

It is not a de Polignac number, because 2897129 - 2⁴ = 2897113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2897092 and 2897101.

It is not an unprimeable number, because it can be changed into a prime (2897119) by changing a digit.

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, 49922 + ... + 49979.

It is an arithmetic number, because the mean of its divisors is an integer number (749265).

2^2897129 is an apocalyptic number.

2897129 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2897129 is a deficient number, since it is larger than the sum of its proper divisors (99931).

2897129 is an equidigital number, since it uses as much as digits as its factorization.

2897129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99930.

The product of its digits is 18144, while the sum is 38.

The square root of 2897129 is about 1702.0954732329. The cubic root of 2897129 is about 142.5572397522.

The spelling of 2897129 in words is "two million, eight hundred ninety-seven thousand, one hundred twenty-nine".