2239487993 has 2 divisors, whose sum is σ = 2239487994. Its totient is φ = 2239487992.

The previous prime is 2239487983. The next prime is 2239488001. The reversal of 2239487993 is 3997849322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2172771769 + 66716224 = 46613^2 + 8168^2 .

It is a cyclic number.

It is not a de Polignac number, because 2239487993 - 2¹⁰ = 2239486969 is a prime.

It is not a weakly prime, because it can be changed into another prime (2239487933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1119743996 + 1119743997.

It is an arithmetic number, because the mean of its divisors is an integer number (1119743997).

Almost surely, 2^2239487993 is an apocalyptic number.

It is an amenable number.

2239487993 is a deficient number, since it is larger than the sum of its proper divisors (1).

2239487993 is an equidigital number, since it uses as much as digits as its factorization.

2239487993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5878656, while the sum is 56.

The square root of 2239487993 is about 47323.2288944869. The cubic root of 2239487993 is about 1308.3268254760.

The spelling of 2239487993 in words is "two billion, two hundred thirty-nine million, four hundred eighty-seven thousand, nine hundred ninety-three".