4040805 has 8 divisors (see below), whose sum is σ = 6465312. Its totient is φ = 2155088.

The previous prime is 4040797. The next prime is 4040833. The reversal of 4040805 is 5080404.

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 4040805 - 2³ = 4040797 is a prime.

4040805 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134679 + ... + 134708.

It is an arithmetic number, because the mean of its divisors is an integer number (808164).

Almost surely, 2^4040805 is an apocalyptic number.

It is an amenable number.

4040805 is a deficient number, since it is larger than the sum of its proper divisors (2424507).

4040805 is a wasteful number, since it uses less digits than its factorization.

4040805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269395.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 4040805 is about 2010.1753654843. The cubic root of 4040805 is about 159.2780625429.

The spelling of 4040805 in words is "four million, forty thousand, eight hundred five".