139529715 has 16 divisors (see below), whose sum is σ = 240420768. Its totient is φ = 68691456.

The previous prime is 139529681. The next prime is 139529717. The reversal of 139529715 is 517925931.

It is not a de Polignac number, because 139529715 - 2⁸ = 139529459 is a prime.

It is not an unprimeable number, because it can be changed into a prime (139529717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 357574 + ... + 357963.

It is an arithmetic number, because the mean of its divisors is an integer number (15026298).

Almost surely, 2^139529715 is an apocalyptic number.

139529715 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

139529715 is a deficient number, since it is larger than the sum of its proper divisors (100891053).

139529715 is a wasteful number, since it uses less digits than its factorization.

139529715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715558.

The product of its digits is 85050, while the sum is 42.

The square root of 139529715 is about 11812.2696802943. The cubic root of 139529715 is about 518.6673407754.

The spelling of 139529715 in words is "one hundred thirty-nine million, five hundred twenty-nine thousand, seven hundred fifteen".