406431613 has 8 divisors (see below), whose sum is σ = 473257728. Its totient is φ = 341796624.

The previous prime is 406431587. The next prime is 406431653. The reversal of 406431613 is 316134604.

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

It is a cyclic number.

It is not a de Polignac number, because 406431613 - 2⁹ = 406431101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406431653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 547381 + ... + 548122.

It is an arithmetic number, because the mean of its divisors is an integer number (59157216).

Almost surely, 2^406431613 is an apocalyptic number.

It is an amenable number.

406431613 is a deficient number, since it is larger than the sum of its proper divisors (66826115).

406431613 is a wasteful number, since it uses less digits than its factorization.

406431613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1095563.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 406431613 is about 20160.1491313929. The cubic root of 406431613 is about 740.7343653365.

It can be divided in two parts, 406431 and 613, that added together give a square (407044 = 638²).

The spelling of 406431613 in words is "four hundred six million, four hundred thirty-one thousand, six hundred thirteen".