406649506 has 16 divisors (see below), whose sum is σ = 630812160. Its totient is φ = 196403040.

The previous prime is 406649489. The next prime is 406649519. The reversal of 406649506 is 605946604.

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, 29515 + ... + 41041.

It is an arithmetic number, because the mean of its divisors is an integer number (39425760).

Almost surely, 2^406649506 is an apocalyptic number.

406649506 is a deficient number, since it is larger than the sum of its proper divisors (224162654).

406649506 is a wasteful number, since it uses less digits than its factorization.

406649506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12129.

The product of its (nonzero) digits is 155520, while the sum is 40.

The square root of 406649506 is about 20165.5524595782. The cubic root of 406649506 is about 740.8667139641.

The spelling of 406649506 in words is "four hundred six million, six hundred forty-nine thousand, five hundred six".