2000391 has 8 divisors (see below), whose sum is σ = 2759280. Its totient is φ = 1287552.

The previous prime is 2000389. The next prime is 2000393. The reversal of 2000391 is 1930002.

It is an interprime number because it is at equal distance from previous prime (2000389) and next prime (2000393).

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

It is not a de Polignac number, because 2000391 - 2¹ = 2000389 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2000391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2000393) 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, 11410 + ... + 11583.

It is an arithmetic number, because the mean of its divisors is an integer number (344910).

2^2000391 is an apocalyptic number.

2000391 is a deficient number, since it is larger than the sum of its proper divisors (758889).

2000391 is a wasteful number, since it uses less digits than its factorization.

2000391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23025.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 2000391 is about 1414.3517949930. The cubic root of 2000391 is about 126.0003149400. Note that the first 3 decimals are identical.

Subtracting from 2000391 its sum of digits (15), we obtain a cube (2000376 = 126³).

Adding to 2000391 its reverse (1930002), we get a palindrome (3930393).

The spelling of 2000391 in words is "two million, three hundred ninety-one", and thus it is an aban number.