728353979 has 2 divisors, whose sum is σ = 728353980. Its totient is φ = 728353978.

The previous prime is 728353973. The next prime is 728353993. The reversal of 728353979 is 979353827.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 728353979 - 2¹² = 728349883 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 728353979.

It is not a weakly prime, because it can be changed into another prime (728353973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364176989 + 364176990.

It is an arithmetic number, because the mean of its divisors is an integer number (364176990).

Almost surely, 2^728353979 is an apocalyptic number.

728353979 is a deficient number, since it is larger than the sum of its proper divisors (1).

728353979 is an equidigital number, since it uses as much as digits as its factorization.

728353979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2857680, while the sum is 53.

The square root of 728353979 is about 26988.0339965697. The cubic root of 728353979 is about 899.7340691675.

The spelling of 728353979 in words is "seven hundred twenty-eight million, three hundred fifty-three thousand, nine hundred seventy-nine".