50397689 has 2 divisors, whose sum is σ = 50397690. Its totient is φ = 50397688.

The previous prime is 50397653. The next prime is 50397701. The reversal of 50397689 is 98679305.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43454464 + 6943225 = 6592^2 + 2635^2 .

It is a cyclic number.

It is not a de Polignac number, because 50397689 - 2¹⁶ = 50332153 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (50397619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25198844 + 25198845.

It is an arithmetic number, because the mean of its divisors is an integer number (25198845).

Almost surely, 2^50397689 is an apocalyptic number.

It is an amenable number.

50397689 is a deficient number, since it is larger than the sum of its proper divisors (1).

50397689 is an equidigital number, since it uses as much as digits as its factorization.

50397689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 408240, while the sum is 47.

The square root of 50397689 is about 7099.1329752301. The cubic root of 50397689 is about 369.3773042096.

The spelling of 50397689 in words is "fifty million, three hundred ninety-seven thousand, six hundred eighty-nine".