2061989 has 4 divisors (see below), whose sum is σ = 2065824. Its totient is φ = 2058156.

The previous prime is 2061971. The next prime is 2062001. The reversal of 2061989 is 9891602.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2061989 - 2⁸ = 2061733 is a prime.

It is a super-2 number, since 2×2061989² = 8503597272242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2061919) 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, 947 + ... + 2240.

It is an arithmetic number, because the mean of its divisors is an integer number (516456).

2^2061989 is an apocalyptic number.

It is an amenable number.

2061989 is a deficient number, since it is larger than the sum of its proper divisors (3835).

2061989 is an equidigital number, since it uses as much as digits as its factorization.

2061989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3834.

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

The square root of 2061989 is about 1435.9627432493. The cubic root of 2061989 is about 127.2805709297.

The spelling of 2061989 in words is "two million, sixty-one thousand, nine hundred eighty-nine".