396428928609 has 16 divisors (see below), whose sum is σ = 604706905088. Its totient is φ = 226296543312.

The previous prime is 396428928589. The next prime is 396428928661. The reversal of 396428928609 is 906829824693.

It is not a de Polignac number, because 396428928609 - 2¹⁶ = 396428863073 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 396428928609.

It is not an unprimeable number, because it can be changed into a prime (396428928409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9740587 + ... + 9781200.

It is an arithmetic number, because the mean of its divisors is an integer number (37794181568).

Almost surely, 2^396428928609 is an apocalyptic number.

It is an amenable number.

396428928609 is a deficient number, since it is larger than the sum of its proper divisors (208277976479).

396428928609 is a wasteful number, since it uses less digits than its factorization.

396428928609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19522764.

The product of its (nonzero) digits is 80621568, while the sum is 66.

The spelling of 396428928609 in words is "three hundred ninety-six billion, four hundred twenty-eight million, nine hundred twenty-eight thousand, six hundred nine".