406403626 has 8 divisors (see below), whose sum is σ = 609869664. Its totient is φ = 203113740.

The previous prime is 406403611. The next prime is 406403633. The reversal of 406403626 is 626304604.

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, 38110 + ... + 47593.

It is an arithmetic number, because the mean of its divisors is an integer number (76233708).

Almost surely, 2^406403626 is an apocalyptic number.

406403626 is a deficient number, since it is larger than the sum of its proper divisors (203466038).

406403626 is a wasteful number, since it uses less digits than its factorization.

406403626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88076.

The product of its (nonzero) digits is 20736, while the sum is 31.

The square root of 406403626 is about 20159.4550025540. The cubic root of 406403626 is about 740.7173625510.

The spelling of 406403626 in words is "four hundred six million, four hundred three thousand, six hundred twenty-six".