406212746 has 8 divisors (see below), whose sum is σ = 609413220. Its totient is φ = 203075008.

The previous prime is 406212731. The next prime is 406212749. The reversal of 406212746 is 647212604.

It can be written as a sum of positive squares in 2 ways, for example, as 326199721 + 80013025 = 18061^2 + 8945^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (406212749) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 7160 + ... + 29388.

Almost surely, 2^406212746 is an apocalyptic number.

406212746 is a deficient number, since it is larger than the sum of its proper divisors (203200474).

406212746 is a wasteful number, since it uses less digits than its factorization.

406212746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31368.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 406212746 is about 20154.7201915581. The cubic root of 406212746 is about 740.6013774706.

The spelling of 406212746 in words is "four hundred six million, two hundred twelve thousand, seven hundred forty-six".