50399816 has 8 divisors (see below), whose sum is σ = 94499670. Its totient is φ = 25199904.

The previous prime is 50399807. The next prime is 50399819. The reversal of 50399816 is 61899305.

It can be written as a sum of positive squares in only one way, i.e., 46977316 + 3422500 = 6854^2 + 1850^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (50399819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3149981 + ... + 3149996.

Almost surely, 2^50399816 is an apocalyptic number.

It is an amenable number.

50399816 is a deficient number, since it is larger than the sum of its proper divisors (44099854).

50399816 is a wasteful number, since it uses less digits than its factorization.

50399816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6299983 (or 6299979 counting only the distinct ones).

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

The square root of 50399816 is about 7099.2827806758. The cubic root of 50399816 is about 369.3825005754.

It can be divided in two parts, 50399 and 816, that added together give a palindrome (51215).

The spelling of 50399816 in words is "fifty million, three hundred ninety-nine thousand, eight hundred sixteen".