50399970 has 64 divisors (see below), whose sum is σ = 131760000. Its totient is φ = 12289536.

The previous prime is 50399963. The next prime is 50399981. The reversal of 50399970 is 7999305.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15006 + ... + 18054.

It is an arithmetic number, because the mean of its divisors is an integer number (2058750).

Almost surely, 2^50399970 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50399970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65880000).

50399970 is an abundant number, since it is smaller than the sum of its proper divisors (81360030).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

50399970 is a wasteful number, since it uses less digits than its factorization.

50399970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3107.

The product of its (nonzero) digits is 76545, while the sum is 42.

The square root of 50399970 is about 7099.2936268336. The cubic root of 50399970 is about 369.3828767993.

The spelling of 50399970 in words is "fifty million, three hundred ninety-nine thousand, nine hundred seventy".