50139404 has 48 divisors (see below), whose sum is σ = 106982400. Its totient is φ = 20082816.

The previous prime is 50139391. The next prime is 50139407. The reversal of 50139404 is 40493105.

It is not an unprimeable number, because it can be changed into a prime (50139407) 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, 41432 + ... + 42624.

It is an arithmetic number, because the mean of its divisors is an integer number (2228800).

Almost surely, 2^50139404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50139404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53491200).

50139404 is an abundant number, since it is smaller than the sum of its proper divisors (56842996).

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

50139404 is a wasteful number, since it uses less digits than its factorization.

50139404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1302 (or 1300 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 50139404 is about 7080.9183020283. The cubic root of 50139404 is about 368.7452113139.

The spelling of 50139404 in words is "fifty million, one hundred thirty-nine thousand, four hundred four".