2239885978 has 16 divisors (see below), whose sum is σ = 3719975904. Its totient is φ = 1002933360.

The previous prime is 2239885969. The next prime is 2239885979. The reversal of 2239885978 is 8795889322.

It is not an unprimeable number, because it can be changed into a prime (2239885979) 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, 758325 + ... + 761272.

It is an arithmetic number, because the mean of its divisors is an integer number (232498494).

Almost surely, 2^2239885978 is an apocalyptic number.

2239885978 is a deficient number, since it is larger than the sum of its proper divisors (1480089926).

2239885978 is a wasteful number, since it uses less digits than its factorization.

2239885978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1519677.

The product of its digits is 17418240, while the sum is 61.

The square root of 2239885978 is about 47327.4336722371. The cubic root of 2239885978 is about 1308.4043228938.

The spelling of 2239885978 in words is "two billion, two hundred thirty-nine million, eight hundred eighty-five thousand, nine hundred seventy-eight".