406486 has 12 divisors (see below), whose sum is σ = 644652. Its totient is φ = 192204.

The previous prime is 406481. The next prime is 406499. The reversal of 406486 is 684604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406481) by changing a digit.

406486 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 441 + ... + 1003.

It is an arithmetic number, because the mean of its divisors is an integer number (53721).

2⁴⁰⁶⁴⁸⁶ is an apocalyptic number.

406486 is a deficient number, since it is larger than the sum of its proper divisors (238166).

406486 is a wasteful number, since it uses less digits than its factorization.

406486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603 (or 584 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 406486 is about 637.5625459514. The cubic root of 406486 is about 74.0767404534.

The spelling of 406486 in words is "four hundred six thousand, four hundred eighty-six".