139485715 has 4 divisors (see below), whose sum is σ = 167382864. Its totient is φ = 111588568.

The previous prime is 139485713. The next prime is 139485743. The reversal of 139485715 is 517584931.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 139485715 - 2¹ = 139485713 is a prime.

It is a super-2 number, since 2×139485715² = 38912529378122450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139485713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13948567 + ... + 13948576.

It is an arithmetic number, because the mean of its divisors is an integer number (41845716).

Almost surely, 2^139485715 is an apocalyptic number.

139485715 is a deficient number, since it is larger than the sum of its proper divisors (27897149).

139485715 is an equidigital number, since it uses as much as digits as its factorization.

139485715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27897148.

The product of its digits is 151200, while the sum is 43.

The square root of 139485715 is about 11810.4070632642. The cubic root of 139485715 is about 518.6128153236.

The spelling of 139485715 in words is "one hundred thirty-nine million, four hundred eighty-five thousand, seven hundred fifteen".