139982929 has 2 divisors, whose sum is σ = 139982930. Its totient is φ = 139982928.

The previous prime is 139982917. The next prime is 139982939. The reversal of 139982929 is 929289931.

139982929 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126675025 + 13307904 = 11255^2 + 3648^2 .

It is a cyclic number.

It is not a de Polignac number, because 139982929 - 2⁹ = 139982417 is a prime.

It is a super-2 number, since 2×139982929² = 39190440822838082, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (139982939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69991464 + 69991465.

It is an arithmetic number, because the mean of its divisors is an integer number (69991465).

Almost surely, 2^139982929 is an apocalyptic number.

It is an amenable number.

139982929 is a deficient number, since it is larger than the sum of its proper divisors (1).

139982929 is an equidigital number, since it uses as much as digits as its factorization.

139982929 is an evil number, because the sum of its binary digits is even.

The product of its digits is 629856, while the sum is 52.

The square root of 139982929 is about 11831.4381627932. The cubic root of 139982929 is about 519.2283043113.

The spelling of 139982929 in words is "one hundred thirty-nine million, nine hundred eighty-two thousand, nine hundred twenty-nine".