272638789 has 2 divisors, whose sum is σ = 272638790. Its totient is φ = 272638788.

The previous prime is 272638787. The next prime is 272638841. The reversal of 272638789 is 987836272.

It is an a-pointer prime, because the next prime (272638841) can be obtained adding 272638789 to its sum of digits (52).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 271096225 + 1542564 = 16465^2 + 1242^2 .

It is a cyclic number.

It is not a de Polignac number, because 272638789 - 2¹ = 272638787 is a prime.

Together with 272638787, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (272638781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136319394 + 136319395.

It is an arithmetic number, because the mean of its divisors is an integer number (136319395).

Almost surely, 2^272638789 is an apocalyptic number.

It is an amenable number.

272638789 is a deficient number, since it is larger than the sum of its proper divisors (1).

272638789 is an equidigital number, since it uses as much as digits as its factorization.

272638789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2032128, while the sum is 52.

The square root of 272638789 is about 16511.7772816859. Note that the first 3 decimals coincide. The cubic root of 272638789 is about 648.4291765504.

The spelling of 272638789 in words is "two hundred seventy-two million, six hundred thirty-eight thousand, seven hundred eighty-nine".