406704389 has 16 divisors (see below), whose sum is σ = 507424512. Its totient is φ = 317374848.

The previous prime is 406704383. The next prime is 406704391. The reversal of 406704389 is 983407604.

It is not a de Polignac number, because 406704389 - 2⁴ = 406704373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406704383) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 23969 + ... + 37254.

It is an arithmetic number, because the mean of its divisors is an integer number (31714032).

Almost surely, 2^406704389 is an apocalyptic number.

It is an amenable number.

406704389 is a deficient number, since it is larger than the sum of its proper divisors (100720123).

406704389 is a wasteful number, since it uses less digits than its factorization.

406704389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61316.

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 406704389 is about 20166.9132243881. The cubic root of 406704389 is about 740.9000425498.

The spelling of 406704389 in words is "four hundred six million, seven hundred four thousand, three hundred eighty-nine".