139773929 has 2 divisors, whose sum is σ = 139773930. Its totient is φ = 139773928.

The previous prime is 139773913. The next prime is 139773973. The reversal of 139773929 is 929377931.

139773929 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133448704 + 6325225 = 11552^2 + 2515^2 .

It is a cyclic number.

It is not a de Polignac number, because 139773929 - 2⁴ = 139773913 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (139773979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69886964 + 69886965.

It is an arithmetic number, because the mean of its divisors is an integer number (69886965).

Almost surely, 2^139773929 is an apocalyptic number.

It is an amenable number.

139773929 is a deficient number, since it is larger than the sum of its proper divisors (1).

139773929 is an equidigital number, since it uses as much as digits as its factorization.

139773929 is an evil number, because the sum of its binary digits is even.

The product of its digits is 642978, while the sum is 50.

The square root of 139773929 is about 11822.6024630789. The cubic root of 139773929 is about 518.9697661958.

The spelling of 139773929 in words is "one hundred thirty-nine million, seven hundred seventy-three thousand, nine hundred twenty-nine".