2820249879 has 8 divisors (see below), whose sum is σ = 3772348272. Its totient is φ = 1874159040.

The previous prime is 2820249869. The next prime is 2820249911. The reversal of 2820249879 is 9789420282.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2820249879 - 2²³ = 2811861271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2820249829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1500792 + ... + 1502669.

It is an arithmetic number, because the mean of its divisors is an integer number (471543534).

Almost surely, 2^2820249879 is an apocalyptic number.

2820249879 is a deficient number, since it is larger than the sum of its proper divisors (952098393).

2820249879 is a wasteful number, since it uses less digits than its factorization.

2820249879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3003777.

The product of its (nonzero) digits is 1161216, while the sum is 51.

The square root of 2820249879 is about 53106.0248841880. The cubic root of 2820249879 is about 1412.8493725697.

The spelling of 2820249879 in words is "two billion, eight hundred twenty million, two hundred forty-nine thousand, eight hundred seventy-nine".