328077779 has 4 divisors (see below), whose sum is σ = 336944784. Its totient is φ = 319210776.

The previous prime is 328077751. The next prime is 328077787. The reversal of 328077779 is 977770823.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-328077779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (328077179) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4433447 + ... + 4433520.

It is an arithmetic number, because the mean of its divisors is an integer number (84236196).

Almost surely, 2^328077779 is an apocalyptic number.

328077779 is a deficient number, since it is larger than the sum of its proper divisors (8867005).

328077779 is an equidigital number, since it uses as much as digits as its factorization.

328077779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8867004.

The product of its (nonzero) digits is 1037232, while the sum is 50.

The square root of 328077779 is about 18112.9174624079. The cubic root of 328077779 is about 689.6979557375.

The spelling of 328077779 in words is "three hundred twenty-eight million, seventy-seven thousand, seven hundred seventy-nine".