406343626 has 16 divisors (see below), whose sum is σ = 659741544. Its totient is φ = 186588864.

The previous prime is 406343591. The next prime is 406343627. The reversal of 406343626 is 626343604.

It can be written as a sum of positive squares in 4 ways, for example, as 373842225 + 32501401 = 19335^2 + 5701^2 .

It is a junction number, because it is equal to n+sod(n) for n = 406343591 and 406343600.

It is not an unprimeable number, because it can be changed into a prime (406343627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34545 + ... + 44788.

Almost surely, 2^406343626 is an apocalyptic number.

406343626 is a deficient number, since it is larger than the sum of its proper divisors (253397918).

406343626 is a wasteful number, since it uses less digits than its factorization.

406343626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79545.

The product of its (nonzero) digits is 62208, while the sum is 34.

The square root of 406343626 is about 20157.9668121564. The cubic root of 406343626 is about 740.6809084561.

The spelling of 406343626 in words is "four hundred six million, three hundred forty-three thousand, six hundred twenty-six".