2889431 has 4 divisors (see below), whose sum is σ = 2892864. Its totient is φ = 2886000.

The previous prime is 2889427. The next prime is 2889437. The reversal of 2889431 is 1349882.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1349882 = 2 ⋅674941.

It is a cyclic number.

It is not a de Polignac number, because 2889431 - 2² = 2889427 is a prime.

It is a super-2 number, since 2×2889431² = 16697623007522, 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 = 2889391 and 2889400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2889437) 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, 506 + ... + 2456.

It is an arithmetic number, because the mean of its divisors is an integer number (723216).

2^2889431 is an apocalyptic number.

2889431 is a deficient number, since it is larger than the sum of its proper divisors (3433).

2889431 is a wasteful number, since it uses less digits than its factorization.

2889431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3432.

The product of its digits is 13824, while the sum is 35.

The square root of 2889431 is about 1699.8326388207. The cubic root of 2889431 is about 142.4308641753.

The spelling of 2889431 in words is "two million, eight hundred eighty-nine thousand, four hundred thirty-one".