406940626 has 8 divisors (see below), whose sum is σ = 610507260. Its totient is φ = 203438208.

The previous prime is 406940591. The next prime is 406940659. The reversal of 406940626 is 626049604.

It can be written as a sum of positive squares in 2 ways, for example, as 392079601 + 14861025 = 19801^2 + 3855^2 .

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 5670 + ... + 29086.

Almost surely, 2^406940626 is an apocalyptic number.

406940626 is a deficient number, since it is larger than the sum of its proper divisors (203566634).

406940626 is a wasteful number, since it uses less digits than its factorization.

406940626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32108.

The product of its (nonzero) digits is 62208, while the sum is 37.

The square root of 406940626 is about 20172.7694182033. The cubic root of 406940626 is about 741.0434670536.

The spelling of 406940626 in words is "four hundred six million, nine hundred forty thousand, six hundred twenty-six".