6211989 has 24 divisors (see below), whose sum is σ = 10338432. Its totient is φ = 3520800.

The previous prime is 6211981. The next prime is 6212009. The reversal of 6211989 is 9891126.

It is not a de Polignac number, because 6211989 - 2³ = 6211981 is a prime.

It is a super-2 number, since 2×6211989² = 77177614672242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6211981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9187 + ... + 9839.

It is an arithmetic number, because the mean of its divisors is an integer number (430768).

Almost surely, 2^6211989 is an apocalyptic number.

It is an amenable number.

6211989 is a deficient number, since it is larger than the sum of its proper divisors (4126443).

6211989 is a wasteful number, since it uses less digits than its factorization.

6211989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 817 (or 814 counting only the distinct ones).

The product of its digits is 7776, while the sum is 36.

The square root of 6211989 is about 2492.3862060283. The cubic root of 6211989 is about 183.8273920835.

The spelling of 6211989 in words is "six million, two hundred eleven thousand, nine hundred eighty-nine".