6021989 has 4 divisors (see below), whose sum is σ = 6104556. Its totient is φ = 5939424.

The previous prime is 6021949. The next prime is 6021991. The reversal of 6021989 is 9891206.

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 1399489 + 4622500 = 1183^2 + 2150^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6021989 is a prime.

It is a super-2 number, since 2×6021989² = 72528703032242, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6021949) 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, 41174 + ... + 41319.

It is an arithmetic number, because the mean of its divisors is an integer number (1526139).

Almost surely, 2^6021989 is an apocalyptic number.

It is an amenable number.

6021989 is a deficient number, since it is larger than the sum of its proper divisors (82567).

6021989 is an equidigital number, since it uses as much as digits as its factorization.

6021989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82566.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 6021989 is about 2453.9741237430. The cubic root of 6021989 is about 181.9337701296.

It can be divided in two parts, 602 and 1989, that multiplied together give a triangular number (1197378 = T₁₅₄₇).

The spelling of 6021989 in words is "six million, twenty-one thousand, nine hundred eighty-nine".