139122953 has 2 divisors, whose sum is σ = 139122954. Its totient is φ = 139122952.

The previous prime is 139122937. The next prime is 139122979. The reversal of 139122953 is 359221931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82391929 + 56731024 = 9077^2 + 7532^2 .

It is an emirp because it is prime and its reverse (359221931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 139122953 - 2⁴ = 139122937 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is equal to p_7865342 and since 139122953 and 7865342 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 (139122983) 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, 69561476 + 69561477.

It is an arithmetic number, because the mean of its divisors is an integer number (69561477).

Almost surely, 2^139122953 is an apocalyptic number.

It is an amenable number.

139122953 is a deficient number, since it is larger than the sum of its proper divisors (1).

139122953 is an equidigital number, since it uses as much as digits as its factorization.

139122953 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14580, while the sum is 35.

The square root of 139122953 is about 11795.0393386372. The cubic root of 139122953 is about 518.1628377007.

The spelling of 139122953 in words is "one hundred thirty-nine million, one hundred twenty-two thousand, nine hundred fifty-three".