139440050 has 48 divisors (see below), whose sum is σ = 280458240. Its totient is φ = 51399360.

The previous prime is 139440029. The next prime is 139440071. The reversal of 139440050 is 50044931.

It is an interprime number because it is at equal distance from previous prime (139440029) and next prime (139440071).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33167 + ... + 37133.

It is an arithmetic number, because the mean of its divisors is an integer number (5842880).

Almost surely, 2^139440050 is an apocalyptic number.

139440050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139440050 is an abundant number, since it is smaller than the sum of its proper divisors (141018190).

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

139440050 is a wasteful number, since it uses less digits than its factorization.

139440050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4035 (or 4030 counting only the distinct ones).

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

The square root of 139440050 is about 11808.4736524243. The cubic root of 139440050 is about 518.5562144521.

Adding to 139440050 its reverse (50044931), we get a palindrome (189484981).

The spelling of 139440050 in words is "one hundred thirty-nine million, four hundred forty thousand, fifty".