13772639 has 2 divisors, whose sum is σ = 13772640. Its totient is φ = 13772638.

The previous prime is 13772611. The next prime is 13772677. The reversal of 13772639 is 93627731.

It is an a-pointer prime, because the next prime (13772677) can be obtained adding 13772639 to its sum of digits (38).

It is a weak prime.

It is an emirp because it is prime and its reverse (93627731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13772639 - 2¹² = 13768543 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13772039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6886319 + 6886320.

It is an arithmetic number, because the mean of its divisors is an integer number (6886320).

Almost surely, 2^13772639 is an apocalyptic number.

13772639 is a deficient number, since it is larger than the sum of its proper divisors (1).

13772639 is an equidigital number, since it uses as much as digits as its factorization.

13772639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47628, while the sum is 38.

The square root of 13772639 is about 3711.1506301954. The cubic root of 13772639 is about 239.7024031270.

The spelling of 13772639 in words is "thirteen million, seven hundred seventy-two thousand, six hundred thirty-nine".