2857969 has 4 divisors (see below), whose sum is σ = 2877300. Its totient is φ = 2838640.

The previous prime is 2857951. The next prime is 2857973. The reversal of 2857969 is 9697582.

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 1199025 + 1658944 = 1095^2 + 1288^2 .

It is a cyclic number.

It is not a de Polignac number, because 2857969 - 2⁵ = 2857937 is a prime.

It is a super-2 number, since 2×2857969² = 16335973609922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2857949) 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, 9442 + ... + 9739.

It is an arithmetic number, because the mean of its divisors is an integer number (719325).

2^2857969 is an apocalyptic number.

It is an amenable number.

2857969 is a deficient number, since it is larger than the sum of its proper divisors (19331).

2857969 is a wasteful number, since it uses less digits than its factorization.

2857969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19330.

The product of its digits is 272160, while the sum is 46.

The square root of 2857969 is about 1690.5528681470. The cubic root of 2857969 is about 141.9120165142.

The spelling of 2857969 in words is "two million, eight hundred fifty-seven thousand, nine hundred sixty-nine".