139529306 has 16 divisors (see below), whose sum is σ = 239507520. Its totient is φ = 59719680.

The previous prime is 139529303. The next prime is 139529317. The reversal of 139529306 is 603925931.

It is a self number, because there is not a number n which added to its sum of digits gives 139529306.

It is not an unprimeable number, because it can be changed into a prime (139529303) 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, 5210 + ... + 17498.

It is an arithmetic number, because the mean of its divisors is an integer number (14969220).

Almost surely, 2^139529306 is an apocalyptic number.

139529306 is a deficient number, since it is larger than the sum of its proper divisors (99978214).

139529306 is a wasteful number, since it uses less digits than its factorization.

139529306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13109.

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

The square root of 139529306 is about 11812.2523677747. The cubic root of 139529306 is about 518.6668339894. Note that the first 3 decimals are identical.

The spelling of 139529306 in words is "one hundred thirty-nine million, five hundred twenty-nine thousand, three hundred six".