2039391 has 8 divisors (see below), whose sum is σ = 3021360. Its totient is φ = 1359576.

The previous prime is 2039383. The next prime is 2039407. The reversal of 2039391 is 1939302.

It is not a de Polignac number, because 2039391 - 2³ = 2039383 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 75533 = 2039391 / (2 + 0 + 3 + 9 + 3 + 9 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2039321) 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, 37740 + ... + 37793.

It is an arithmetic number, because the mean of its divisors is an integer number (377670).

2^2039391 is an apocalyptic number.

2039391 is a deficient number, since it is larger than the sum of its proper divisors (981969).

2039391 is an equidigital number, since it uses as much as digits as its factorization.

2039391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75542 (or 75536 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 27.

The square root of 2039391 is about 1428.0724771523. The cubic root of 2039391 is about 126.8138923701.

The spelling of 2039391 in words is "two million, thirty-nine thousand, three hundred ninety-one".