2239930985 has 4 divisors (see below), whose sum is σ = 2687917188. Its totient is φ = 1791944784.

The previous prime is 2239930963. The next prime is 2239931027. The reversal of 2239930985 is 5890399322.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 660027481 + 1579903504 = 25691^2 + 39748^2 .

It is a cyclic number.

It is not a de Polignac number, because 2239930985 - 2¹⁴ = 2239914601 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 223993094 + ... + 223993103.

It is an arithmetic number, because the mean of its divisors is an integer number (671979297).

Almost surely, 2^2239930985 is an apocalyptic number.

It is an amenable number.

2239930985 is a deficient number, since it is larger than the sum of its proper divisors (447986203).

2239930985 is an equidigital number, since it uses as much as digits as its factorization.

2239930985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447986202.

The product of its (nonzero) digits is 1049760, while the sum is 50.

The square root of 2239930985 is about 47327.9091551697. The cubic root of 2239930985 is about 1308.4130862802.

The spelling of 2239930985 in words is "two billion, two hundred thirty-nine million, nine hundred thirty thousand, nine hundred eighty-five".