139272949 has 2 divisors, whose sum is σ = 139272950. Its totient is φ = 139272948.

The previous prime is 139272929. The next prime is 139272989. The reversal of 139272949 is 949272931.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 134142724 + 5130225 = 11582^2 + 2265^2 .

It is a cyclic number.

It is not a de Polignac number, because 139272949 - 2²⁷ = 5055221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 139272899 and 139272908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139272929) 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, 69636474 + 69636475.

It is an arithmetic number, because the mean of its divisors is an integer number (69636475).

Almost surely, 2^139272949 is an apocalyptic number.

It is an amenable number.

139272949 is a deficient number, since it is larger than the sum of its proper divisors (1).

139272949 is an equidigital number, since it uses as much as digits as its factorization.

139272949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 244944, while the sum is 46.

The square root of 139272949 is about 11801.3960614836. The cubic root of 139272949 is about 518.3489906343.

The spelling of 139272949 in words is "one hundred thirty-nine million, two hundred seventy-two thousand, nine hundred forty-nine".