719472991 has 4 divisors (see below), whose sum is σ = 720419184. Its totient is φ = 718526800.

The previous prime is 719472989. The next prime is 719473003. The reversal of 719472991 is 199274917.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 199274917 = 2113 ⋅94309.

It is a cyclic number.

It is not a de Polignac number, because 719472991 - 2¹ = 719472989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (719472911) 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, 471955 + ... + 473476.

It is an arithmetic number, because the mean of its divisors is an integer number (180104796).

Almost surely, 2^719472991 is an apocalyptic number.

719472991 is a deficient number, since it is larger than the sum of its proper divisors (946193).

719472991 is an equidigital number, since it uses as much as digits as its factorization.

719472991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 946192.

The product of its digits is 285768, while the sum is 49.

The square root of 719472991 is about 26822.9936994363. The cubic root of 719472991 is about 896.0622162467.

The spelling of 719472991 in words is "seven hundred nineteen million, four hundred seventy-two thousand, nine hundred ninety-one".