719979 has 8 divisors (see below), whose sum is σ = 1033872. Its totient is φ = 443040.

The previous prime is 719959. The next prime is 719981. The reversal of 719979 is 979917.

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

It is not a de Polignac number, because 719979 - 2⁵ = 719947 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 719979.

It is not an unprimeable number, because it can be changed into a prime (719959) 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 7 ways as a sum of consecutive naturals, for example, 9192 + ... + 9269.

It is an arithmetic number, because the mean of its divisors is an integer number (129234).

2⁷¹⁹⁹⁷⁹ is an apocalyptic number.

719979 is a deficient number, since it is larger than the sum of its proper divisors (313893).

719979 is a wasteful number, since it uses less digits than its factorization.

719979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18477.

The product of its digits is 35721, while the sum is 42.

The square root of 719979 is about 848.5157629650. The cubic root of 719979 is about 89.6272235384.

The spelling of 719979 in words is "seven hundred nineteen thousand, nine hundred seventy-nine".