139479085 has 8 divisors (see below), whose sum is σ = 171898776. Its totient is φ = 108567360.

The previous prime is 139479077. The next prime is 139479103. The reversal of 139479085 is 580974931.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 21409129 + 118069956 = 4627^2 + 10866^2 .

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

It is not a de Polignac number, because 139479085 - 2³ = 139479077 is a prime.

It is a Duffinian number.

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, 376786 + ... + 377155.

It is an arithmetic number, because the mean of its divisors is an integer number (21487347).

Almost surely, 2^139479085 is an apocalyptic number.

It is an amenable number.

139479085 is a deficient number, since it is larger than the sum of its proper divisors (32419691).

139479085 is an equidigital number, since it uses as much as digits as its factorization.

139479085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 753983.

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 139479085 is about 11810.1263752764. The cubic root of 139479085 is about 518.6045983353.

It can be divided in two parts, 13947 and 9085, that added together give a palindrome (23032).

The spelling of 139479085 in words is "one hundred thirty-nine million, four hundred seventy-nine thousand, eighty-five".