4057405 has 8 divisors (see below), whose sum is σ = 5311584. Its totient is φ = 2950800.

The previous prime is 4057397. The next prime is 4057409. The reversal of 4057405 is 5047504.

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

It is not a de Polignac number, because 4057405 - 2³ = 4057397 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4057405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4057409) 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, 36831 + ... + 36940.

It is an arithmetic number, because the mean of its divisors is an integer number (663948).

Almost surely, 2^4057405 is an apocalyptic number.

It is an amenable number.

4057405 is a deficient number, since it is larger than the sum of its proper divisors (1254179).

4057405 is a wasteful number, since it uses less digits than its factorization.

4057405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73787.

The product of its (nonzero) digits is 2800, while the sum is 25.

The square root of 4057405 is about 2014.3001265948. The cubic root of 4057405 is about 159.4958742132.

Subtracting 4057405 from its reverse (5047504), we obtain a palindrome (990099).

The spelling of 4057405 in words is "four million, fifty-seven thousand, four hundred five".