3126889 has 4 divisors (see below), whose sum is σ = 3132756. Its totient is φ = 3121024.

The previous prime is 3126881. The next prime is 3126901. The reversal of 3126889 is 9886213.

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 1734489 + 1392400 = 1317^2 + 1180^2 .

It is a cyclic number.

It is not a de Polignac number, because 3126889 - 2³ = 3126881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3126881) 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, 2044 + ... + 3229.

It is an arithmetic number, because the mean of its divisors is an integer number (783189).

Almost surely, 2^3126889 is an apocalyptic number.

It is an amenable number.

3126889 is a deficient number, since it is larger than the sum of its proper divisors (5867).

3126889 is an equidigital number, since it uses as much as digits as its factorization.

3126889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5866.

The product of its digits is 20736, while the sum is 37.

The square root of 3126889 is about 1768.3011621327. The cubic root of 3126889 is about 146.2303394810.

The spelling of 3126889 in words is "three million, one hundred twenty-six thousand, eight hundred eighty-nine".