2639287829 has 2 divisors, whose sum is σ = 2639287830. Its totient is φ = 2639287828.

The previous prime is 2639287823. The next prime is 2639287897. The reversal of 2639287829 is 9287829362.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2422903729 + 216384100 = 49223^2 + 14710^2 .

It is a cyclic number.

It is not a de Polignac number, because 2639287829 - 2⁴ = 2639287813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2639287823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1319643914 + 1319643915.

It is an arithmetic number, because the mean of its divisors is an integer number (1319643915).

Almost surely, 2^2639287829 is an apocalyptic number.

It is an amenable number.

2639287829 is a deficient number, since it is larger than the sum of its proper divisors (1).

2639287829 is an equidigital number, since it uses as much as digits as its factorization.

2639287829 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5225472, while the sum is 56.

The square root of 2639287829 is about 51373.9995425702. Note that the first 3 decimals coincide. The cubic root of 2639287829 is about 1381.9603569713.

The spelling of 2639287829 in words is "two billion, six hundred thirty-nine million, two hundred eighty-seven thousand, eight hundred twenty-nine".