719468809 has 4 divisors (see below), whose sum is σ = 734776704. Its totient is φ = 704160916.

The previous prime is 719468807. The next prime is 719468837. The reversal of 719468809 is 908864917.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 908864917 = 41 ⋅22167437.

It is a cyclic number.

It is not a de Polignac number, because 719468809 - 2¹ = 719468807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (719468803) 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 3 ways as a sum of consecutive naturals, for example, 7653877 + ... + 7653970.

It is an arithmetic number, because the mean of its divisors is an integer number (183694176).

Almost surely, 2^719468809 is an apocalyptic number.

It is an amenable number.

719468809 is a deficient number, since it is larger than the sum of its proper divisors (15307895).

719468809 is a wasteful number, since it uses less digits than its factorization.

719468809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15307894.

The product of its (nonzero) digits is 870912, while the sum is 52.

The square root of 719468809 is about 26822.9157438188. The cubic root of 719468809 is about 896.0604800965.

The spelling of 719468809 in words is "seven hundred nineteen million, four hundred sixty-eight thousand, eight hundred nine".