719491 has 4 divisors (see below), whose sum is σ = 761832. Its totient is φ = 677152.

The previous prime is 719483. The next prime is 719503. The reversal of 719491 is 194917.

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 719491 - 2³ = 719483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (719441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21145 + ... + 21178.

It is an arithmetic number, because the mean of its divisors is an integer number (190458).

2⁷¹⁹⁴⁹¹ is an apocalyptic number.

719491 is a deficient number, since it is larger than the sum of its proper divisors (42341).

719491 is a wasteful number, since it uses less digits than its factorization.

719491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42340.

The product of its digits is 2268, while the sum is 31.

The square root of 719491 is about 848.2281532701. The cubic root of 719491 is about 89.6069692575.

The spelling of 719491 in words is "seven hundred nineteen thousand, four hundred ninety-one".