50399769 has 16 divisors (see below), whose sum is σ = 79278080. Its totient is φ = 27870480.

The previous prime is 50399759. The next prime is 50399807. The reversal of 50399769 is 96799305.

It is a happy number.

It is not a de Polignac number, because 50399769 - 2⁵ = 50399737 is a prime.

It is a super-2 number, since 2×50399769² = 5080273430506722, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (50399719) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38059 + ... + 39360.

It is an arithmetic number, because the mean of its divisors is an integer number (4954880).

Almost surely, 2^50399769 is an apocalyptic number.

It is an amenable number.

50399769 is a deficient number, since it is larger than the sum of its proper divisors (28878311).

50399769 is a wasteful number, since it uses less digits than its factorization.

50399769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77460.

The product of its (nonzero) digits is 459270, while the sum is 48.

The square root of 50399769 is about 7099.2794704815. The cubic root of 50399769 is about 369.3823857536.

The spelling of 50399769 in words is "fifty million, three hundred ninety-nine thousand, seven hundred sixty-nine".