139437270 has 96 divisors (see below), whose sum is σ = 432387072. Its totient is φ = 30482496.

The previous prime is 139437253. The next prime is 139437283. The reversal of 139437270 is 72734931.

139437270 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9679 + ... + 19301.

It is an arithmetic number, because the mean of its divisors is an integer number (4504032).

Almost surely, 2^139437270 is an apocalyptic number.

139437270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 139437270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (216193536).

139437270 is an abundant number, since it is smaller than the sum of its proper divisors (292949802).

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

139437270 is a wasteful number, since it uses less digits than its factorization.

139437270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9666 (or 9663 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 36.

The square root of 139437270 is about 11808.3559397572. The cubic root of 139437270 is about 518.5527682976.

The spelling of 139437270 in words is "one hundred thirty-nine million, four hundred thirty-seven thousand, two hundred seventy".