406465886 has 16 divisors (see below), whose sum is σ = 648149040. Its totient is φ = 190512000.

The previous prime is 406465849. The next prime is 406465907. The reversal of 406465886 is 688564604.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 406465886.

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, 15281 + ... + 32348.

It is an arithmetic number, because the mean of its divisors is an integer number (40509315).

Almost surely, 2^406465886 is an apocalyptic number.

406465886 is a deficient number, since it is larger than the sum of its proper divisors (241683154).

406465886 is a wasteful number, since it uses less digits than its factorization.

406465886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47899.

The product of its (nonzero) digits is 1105920, while the sum is 47.

The square root of 406465886 is about 20160.9991319875. Note that the first 3 decimals coincide. The cubic root of 406465886 is about 740.7551859571.

The spelling of 406465886 in words is "four hundred six million, four hundred sixty-five thousand, eight hundred eighty-six".