2039891 has 8 divisors (see below), whose sum is σ = 2360064. Its totient is φ = 1726920.

The previous prime is 2039879. The next prime is 2039899. The reversal of 2039891 is 1989302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2039891 - 2¹⁰ = 2038867 is a prime.

It is a super-2 number, since 2×2039891² = 8322310583762, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2039899) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1175 + ... + 2336.

It is an arithmetic number, because the mean of its divisors is an integer number (295008).

2^2039891 is an apocalyptic number.

2039891 is a deficient number, since it is larger than the sum of its proper divisors (320173).

2039891 is an equidigital number, since it uses as much as digits as its factorization.

2039891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3601.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 2039891 is about 1428.2475275666. The cubic root of 2039891 is about 126.8242552292.

The spelling of 2039891 in words is "two million, thirty-nine thousand, eight hundred ninety-one".