139039045 has 8 divisors (see below), whose sum is σ = 167068440. Its totient is φ = 111083520.

The previous prime is 139038997. The next prime is 139039063. The reversal of 139039045 is 540930931.

It can be written as a sum of positive squares in 4 ways, for example, as 23755876 + 115283169 = 4874^2 + 10737^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 139039045 - 2⁷ = 139038917 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 139039045.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14236 + ... + 21925.

It is an arithmetic number, because the mean of its divisors is an integer number (20883555).

Almost surely, 2^139039045 is an apocalyptic number.

It is an amenable number.

139039045 is a deficient number, since it is larger than the sum of its proper divisors (28029395).

139039045 is an equidigital number, since it uses as much as digits as its factorization.

139039045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36935.

The product of its (nonzero) digits is 14580, while the sum is 34.

The square root of 139039045 is about 11791.4818831222. The cubic root of 139039045 is about 518.0586450898.

Adding to 139039045 its reverse (540930931), we get a palindrome (679969976).

The spelling of 139039045 in words is "one hundred thirty-nine million, thirty-nine thousand, forty-five".