4087405 has 16 divisors (see below), whose sum is σ = 5800320. Its totient is φ = 2705472.

The previous prime is 4087403. The next prime is 4087423. The reversal of 4087405 is 5047804.

It is not a de Polignac number, because 4087405 - 2¹ = 4087403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4087403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 999 + ... + 3028.

It is an arithmetic number, because the mean of its divisors is an integer number (362520).

Almost surely, 2^4087405 is an apocalyptic number.

It is an amenable number.

4087405 is a deficient number, since it is larger than the sum of its proper divisors (1712915).

4087405 is a wasteful number, since it uses less digits than its factorization.

4087405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4068.

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 4087405 is about 2021.7331673591. The cubic root of 4087405 is about 159.8880075664. Note that the first 3 decimals are identical.

The spelling of 4087405 in words is "four million, eighty-seven thousand, four hundred five".