200406405 has 16 divisors (see below), whose sum is σ = 324515520. Its totient is φ = 105595008.

The previous prime is 200406391. The next prime is 200406407. The reversal of 200406405 is 504604002.

It is a happy number.

It is not a de Polignac number, because 200406405 - 2¹⁵ = 200373637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200406407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79240 + ... + 81729.

It is an arithmetic number, because the mean of its divisors is an integer number (20282220).

Almost surely, 2^200406405 is an apocalyptic number.

It is an amenable number.

200406405 is a deficient number, since it is larger than the sum of its proper divisors (124109115).

200406405 is a wasteful number, since it uses less digits than its factorization.

200406405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161060.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 200406405 is about 14156.4969183764. The cubic root of 200406405 is about 585.1993914517.

The spelling of 200406405 in words is "two hundred million, four hundred six thousand, four hundred five".