50139029 has 2 divisors, whose sum is σ = 50139030. Its totient is φ = 50139028.

The previous prime is 50138969. The next prime is 50139031. The reversal of 50139029 is 92093105.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44488900 + 5650129 = 6670^2 + 2377^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50139029 is a prime.

Together with 50139031, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 50138992 and 50139010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50139829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25069514 + 25069515.

It is an arithmetic number, because the mean of its divisors is an integer number (25069515).

Almost surely, 2^50139029 is an apocalyptic number.

It is an amenable number.

50139029 is a deficient number, since it is larger than the sum of its proper divisors (1).

50139029 is an equidigital number, since it uses as much as digits as its factorization.

50139029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2430, while the sum is 29.

The square root of 50139029 is about 7080.8918223625. The cubic root of 50139029 is about 368.7442920116.

The spelling of 50139029 in words is "fifty million, one hundred thirty-nine thousand, twenty-nine".