719799 has 4 divisors (see below), whose sum is σ = 959736. Its totient is φ = 479864.

The previous prime is 719791. The next prime is 719801. The reversal of 719799 is 997917.

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

It is a cyclic number.

It is not a de Polignac number, because 719799 - 2³ = 719791 is a prime.

It is a super-2 number, since 2×719799² = 1036221200802, which contains 22 as substring.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 719799.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (719791) 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, 119964 + ... + 119969.

It is an arithmetic number, because the mean of its divisors is an integer number (239934).

2⁷¹⁹⁷⁹⁹ is an apocalyptic number.

719799 is a deficient number, since it is larger than the sum of its proper divisors (239937).

719799 is a wasteful number, since it uses less digits than its factorization.

719799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239936.

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

The square root of 719799 is about 848.4096887707. The cubic root of 719799 is about 89.6197537627.

It can be divided in two parts, 71 and 9799, that added together give a triangular number (9870 = T₁₄₀).

The spelling of 719799 in words is "seven hundred nineteen thousand, seven hundred ninety-nine".