137444903 has 2 divisors, whose sum is σ = 137444904. Its totient is φ = 137444902.

The previous prime is 137444887. The next prime is 137444921. The reversal of 137444903 is 309444731.

It is a weak prime.

It is an emirp because it is prime and its reverse (309444731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 137444903 - 2⁴ = 137444887 is a prime.

It is a super-2 number, since 2×137444903² = 37782202721358818, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137444933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68722451 + 68722452.

It is an arithmetic number, because the mean of its divisors is an integer number (68722452).

Almost surely, 2^137444903 is an apocalyptic number.

137444903 is a deficient number, since it is larger than the sum of its proper divisors (1).

137444903 is an equidigital number, since it uses as much as digits as its factorization.

137444903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 137444903 is about 11723.6898201889. The cubic root of 137444903 is about 516.0711084724.

The spelling of 137444903 in words is "one hundred thirty-seven million, four hundred forty-four thousand, nine hundred three".