137893799 has 2 divisors, whose sum is σ = 137893800. Its totient is φ = 137893798.

The previous prime is 137893771. The next prime is 137893801. The reversal of 137893799 is 997398731.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137893799 is a prime.

It is a Sophie Germain prime.

Together with 137893801, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137893729) 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, 68946899 + 68946900.

It is an arithmetic number, because the mean of its divisors is an integer number (68946900).

Almost surely, 2^137893799 is an apocalyptic number.

137893799 is a deficient number, since it is larger than the sum of its proper divisors (1).

137893799 is an equidigital number, since it uses as much as digits as its factorization.

137893799 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2571912, while the sum is 56.

The square root of 137893799 is about 11742.8190397366. The cubic root of 137893799 is about 516.6323285307.

The spelling of 137893799 in words is "one hundred thirty-seven million, eight hundred ninety-three thousand, seven hundred ninety-nine".