8240719879 has 4 divisors (see below), whose sum is σ = 9417965584. Its totient is φ = 7063474176.

The previous prime is 8240719831. The next prime is 8240719889. The reversal of 8240719879 is 9789170428.

It is a happy number.

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 8240719879 - 2²¹ = 8238622727 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 (8240719889) 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, 588622842 + ... + 588622855.

It is an arithmetic number, because the mean of its divisors is an integer number (2354491396).

Almost surely, 2^8240719879 is an apocalyptic number.

8240719879 is a deficient number, since it is larger than the sum of its proper divisors (1177245705).

8240719879 is a wasteful number, since it uses less digits than its factorization.

8240719879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1177245704.

The product of its (nonzero) digits is 2032128, while the sum is 55.

The square root of 8240719879 is about 90778.4108640375. The cubic root of 8240719879 is about 2019.8620857219.

The spelling of 8240719879 in words is "eight billion, two hundred forty million, seven hundred nineteen thousand, eight hundred seventy-nine".