999996719 has 4 divisors (see below), whose sum is σ = 1007191080. Its totient is φ = 992802360.

The previous prime is 999996709. The next prime is 999996727. The reversal of 999996719 is 917699999.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 917699999 = 1013 ⋅905923.

It is a cyclic number.

It is not a de Polignac number, because 999996719 - 2²⁰ = 998948143 is a prime.

It is a super-2 number, since 2×999996719² = 1999986876021529922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999996709) 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, 3596972 + ... + 3597249.

It is an arithmetic number, because the mean of its divisors is an integer number (251797770).

Almost surely, 2^999996719 is an apocalyptic number.

999996719 is a deficient number, since it is larger than the sum of its proper divisors (7194361).

999996719 is a wasteful number, since it uses less digits than its factorization.

999996719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7194360.

The product of its digits is 22320522, while the sum is 68.

The square root of 999996719 is about 31622.7247244762. The cubic root of 999996719 is about 999.9989063321.

The spelling of 999996719 in words is "nine hundred ninety-nine million, nine hundred ninety-six thousand, seven hundred nineteen".