2040399 has 12 divisors (see below), whose sum is σ = 3075696. Its totient is φ = 1300992.

The previous prime is 2040377. The next prime is 2040403. The reversal of 2040399 is 9930402.

It is not a de Polignac number, because 2040399 - 2¹³ = 2032207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2040319) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4722 + ... + 5135.

It is an arithmetic number, because the mean of its divisors is an integer number (256308).

2^2040399 is an apocalyptic number.

2040399 is a deficient number, since it is larger than the sum of its proper divisors (1035297).

2040399 is a wasteful number, since it uses less digits than its factorization.

2040399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9886 (or 9883 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 2040399 is about 1428.4253568178. The cubic root of 2040399 is about 126.8347821600.

It can be divided in two parts, 20403 and 99, that added together give a palindrome (20502).

The spelling of 2040399 in words is "two million, forty thousand, three hundred ninety-nine".