4065400405 has 32 divisors (see below), whose sum is σ = 5370624000. Its totient is φ = 2929753920.

The previous prime is 4065400399. The next prime is 4065400411. The reversal of 4065400405 is 5040045604.

It is an interprime number because it is at equal distance from previous prime (4065400399) and next prime (4065400411).

It is not a de Polignac number, because 4065400405 - 2⁹ = 4065399893 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4582872 + ... + 4583758.

It is an arithmetic number, because the mean of its divisors is an integer number (167832000).

Almost surely, 2^4065400405 is an apocalyptic number.

It is an amenable number.

4065400405 is a deficient number, since it is larger than the sum of its proper divisors (1305223595).

4065400405 is a wasteful number, since it uses less digits than its factorization.

4065400405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1569.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 4065400405 is about 63760.4925090765. The cubic root of 4065400405 is about 1596.0057145846.

The spelling of 4065400405 in words is "four billion, sixty-five million, four hundred thousand, four hundred five".