50138969 has 2 divisors, whose sum is σ = 50138970. Its totient is φ = 50138968.

The previous prime is 50138927. The next prime is 50139029. The reversal of 50138969 is 96983105.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49632025 + 506944 = 7045^2 + 712^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50138969 is a prime.

It is a super-2 number, since 2×50138969² = 5027832424765922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (50138909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25069484 + 25069485.

It is an arithmetic number, because the mean of its divisors is an integer number (25069485).

Almost surely, 2^50138969 is an apocalyptic number.

It is an amenable number.

50138969 is a deficient number, since it is larger than the sum of its proper divisors (1).

50138969 is an equidigital number, since it uses as much as digits as its factorization.

50138969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 50138969 is about 7080.8875856068. The cubic root of 50138969 is about 368.7441449228.

The spelling of 50138969 in words is "fifty million, one hundred thirty-eight thousand, nine hundred sixty-nine".