4049405 has 8 divisors (see below), whose sum is σ = 4872192. Its totient is φ = 3230928.

The previous prime is 4049401. The next prime is 4049429. The reversal of 4049405 is 5049404.

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

It is a cyclic number.

It is not a de Polignac number, because 4049405 - 2² = 4049401 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4049401) 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, 1604 + ... + 3266.

It is an arithmetic number, because the mean of its divisors is an integer number (609024).

Almost surely, 2^4049405 is an apocalyptic number.

It is an amenable number.

4049405 is a deficient number, since it is larger than the sum of its proper divisors (822787).

4049405 is a wasteful number, since it uses less digits than its factorization.

4049405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2155.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 4049405 is about 2012.3133453814. The cubic root of 4049405 is about 159.3909790463.

Subtracting 4049405 from its reverse (5049404), we obtain a palindrome (999999).

The spelling of 4049405 in words is "four million, forty-nine thousand, four hundred five".