547879789 has 4 divisors (see below), whose sum is σ = 547926624. Its totient is φ = 547832956.

The previous prime is 547879781. The next prime is 547879823. The reversal of 547879789 is 987978745.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 547879789 - 2³ = 547879781 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 547879789.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (547879781) 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, 10674 + ... + 34780.

It is an arithmetic number, because the mean of its divisors is an integer number (136981656).

Almost surely, 2^547879789 is an apocalyptic number.

It is an amenable number.

547879789 is a deficient number, since it is larger than the sum of its proper divisors (46835).

547879789 is a wasteful number, since it uses less digits than its factorization.

547879789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46834.

The product of its digits is 35562240, while the sum is 64.

The square root of 547879789 is about 23406.8321009059. The cubic root of 547879789 is about 818.2671063950.

The spelling of 547879789 in words is "five hundred forty-seven million, eight hundred seventy-nine thousand, seven hundred eighty-nine".