2239878906 has 40 divisors (see below), whose sum is σ = 5125792320. Its totient is φ = 730738152.

The previous prime is 2239878899. The next prime is 2239878923. The reversal of 2239878906 is 6098789322.

It is a happy number.

2239878906 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 139476 + ... + 154703.

It is an arithmetic number, because the mean of its divisors is an integer number (128144808).

Almost surely, 2^2239878906 is an apocalyptic number.

2239878906 is an abundant number, since it is smaller than the sum of its proper divisors (2885913414).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2239878906 is a wasteful number, since it uses less digits than its factorization.

2239878906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294240 (or 294231 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The square root of 2239878906 is about 47327.3589586404. The cubic root of 2239878906 is about 1308.4029458825.

The spelling of 2239878906 in words is "two billion, two hundred thirty-nine million, eight hundred seventy-eight thousand, nine hundred six".