2000405 has 16 divisors (see below), whose sum is σ = 2692224. Its totient is φ = 1414080.

The previous prime is 2000393. The next prime is 2000413. The reversal of 2000405 is 5040002.

It is not a de Polignac number, because 2000405 - 2⁴ = 2000389 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (11).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1544 + ... + 2526.

It is an arithmetic number, because the mean of its divisors is an integer number (168264).

2^2000405 is an apocalyptic number.

It is an amenable number.

2000405 is a deficient number, since it is larger than the sum of its proper divisors (691819).

2000405 is a wasteful number, since it uses less digits than its factorization.

2000405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1036.

The product of its (nonzero) digits is 40, while the sum is 11.

The square root of 2000405 is about 1414.3567442481. The cubic root of 2000405 is about 126.0006088826. Note that the first 3 decimals are identical.

Adding to 2000405 its reverse (5040002), we get a palindrome (7040407).

It can be divided in two parts, 2000 and 405, that multiplied together give a 4-th power (810000 = 30⁴).

The spelling of 2000405 in words is "two million, four hundred five", and thus it is an aban number.