138962147 has 2 divisors, whose sum is σ = 138962148. Its totient is φ = 138962146.

The previous prime is 138962107. The next prime is 138962167. The reversal of 138962147 is 741269831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 138962147 - 2⁸ = 138961891 is a prime.

It is a Chen prime.

It is equal to p_7856780 and since 138962147 and 7856780 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (138962107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69481073 + 69481074.

It is an arithmetic number, because the mean of its divisors is an integer number (69481074).

Almost surely, 2^138962147 is an apocalyptic number.

138962147 is a deficient number, since it is larger than the sum of its proper divisors (1).

138962147 is an equidigital number, since it uses as much as digits as its factorization.

138962147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 41.

The square root of 138962147 is about 11788.2206884669. The cubic root of 138962147 is about 517.9631203153.

It can be divided in two parts, 1389 and 62147, that added together give a palindrome (63536).

The spelling of 138962147 in words is "one hundred thirty-eight million, nine hundred sixty-two thousand, one hundred forty-seven".