406040684 has 24 divisors (see below), whose sum is σ = 817931520. Its totient is φ = 172763856.

The previous prime is 406040683. The next prime is 406040741. The reversal of 406040684 is 486040604.

It is a self number, because there is not a number n which added to its sum of digits gives 406040684.

It is not an unprimeable number, because it can be changed into a prime (406040683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48272 + ... + 56055.

It is an arithmetic number, because the mean of its divisors is an integer number (34080480).

Almost surely, 2^406040684 is an apocalyptic number.

It is an amenable number.

406040684 is an abundant number, since it is smaller than the sum of its proper divisors (411890836).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

406040684 is a wasteful number, since it uses less digits than its factorization.

406040684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104477 (or 104475 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 406040684 is about 20150.4512108290. The cubic root of 406040684 is about 740.4967956952.

It can be divided in two parts, 4060 and 40684, that added together give a palindrome (44744).

The spelling of 406040684 in words is "four hundred six million, forty thousand, six hundred eighty-four".