139906532 has 24 divisors (see below), whose sum is σ = 260257536. Its totient is φ = 65579648.

The previous prime is 139906531. The next prime is 139906541. The reversal of 139906532 is 235609931.

139906532 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (139906531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13973 + ... + 21795.

It is an arithmetic number, because the mean of its divisors is an integer number (10844064).

Almost surely, 2^139906532 is an apocalyptic number.

It is an amenable number.

139906532 is a deficient number, since it is larger than the sum of its proper divisors (120351004).

139906532 is a wasteful number, since it uses less digits than its factorization.

139906532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8107 (or 8105 counting only the distinct ones).

The product of its (nonzero) digits is 43740, while the sum is 38.

The square root of 139906532 is about 11828.2091628446. The cubic root of 139906532 is about 519.1338292123.

The spelling of 139906532 in words is "one hundred thirty-nine million, nine hundred six thousand, five hundred thirty-two".