137227789 has 2 divisors, whose sum is σ = 137227790. Its totient is φ = 137227788.

The previous prime is 137227787. The next prime is 137227799. The reversal of 137227789 is 987722731.

It is a happy number.

137227789 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120890025 + 16337764 = 10995^2 + 4042^2 .

It is a cyclic number.

It is not a de Polignac number, because 137227789 - 2¹ = 137227787 is a prime.

Together with 137227787, 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 (137227787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68613894 + 68613895.

It is an arithmetic number, because the mean of its divisors is an integer number (68613895).

Almost surely, 2^137227789 is an apocalyptic number.

It is an amenable number.

137227789 is a deficient number, since it is larger than the sum of its proper divisors (1).

137227789 is an equidigital number, since it uses as much as digits as its factorization.

137227789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 296352, while the sum is 46.

The square root of 137227789 is about 11714.4265331257. The cubic root of 137227789 is about 515.7992290750.

It can be divided in two parts, 1372 and 27789, that added together give a triangular number (29161 = T₂₄₁).

The spelling of 137227789 in words is "one hundred thirty-seven million, two hundred twenty-seven thousand, seven hundred eighty-nine".