2102408979 has 16 divisors (see below), whose sum is σ = 3099944064. Its totient is φ = 1256731200.

The previous prime is 2102408963. The next prime is 2102408983. The reversal of 2102408979 is 9798042012.

It is not a de Polignac number, because 2102408979 - 2⁴ = 2102408963 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2102408979.

It is not an unprimeable number, because it can be changed into a prime (2102408579) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 433957 + ... + 438774.

It is an arithmetic number, because the mean of its divisors is an integer number (193746504).

Almost surely, 2^2102408979 is an apocalyptic number.

2102408979 is a deficient number, since it is larger than the sum of its proper divisors (997535085).

2102408979 is a wasteful number, since it uses less digits than its factorization.

2102408979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 872818.

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 2102408979 is about 45852.0335317857. The cubic root of 2102408979 is about 1281.0686426820.

The spelling of 2102408979 in words is "two billion, one hundred two million, four hundred eight thousand, nine hundred seventy-nine".