139671219 has 8 divisors (see below), whose sum is σ = 186525952. Its totient is φ = 92965320.

The previous prime is 139671211. The next prime is 139671241. The reversal of 139671219 is 912176931.

It is a happy number.

139671219 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 139671219 - 2³ = 139671211 is a prime.

It is a super-2 number, since 2×139671219² = 39016098833891922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139671211) 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, 34999 + ... + 38784.

It is an arithmetic number, because the mean of its divisors is an integer number (23315744).

Almost surely, 2^139671219 is an apocalyptic number.

139671219 is a deficient number, since it is larger than the sum of its proper divisors (46854733).

139671219 is an equidigital number, since it uses as much as digits as its factorization.

139671219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74417.

The product of its digits is 20412, while the sum is 39.

The square root of 139671219 is about 11818.2578665385. The cubic root of 139671219 is about 518.8426169563.

The spelling of 139671219 in words is "one hundred thirty-nine million, six hundred seventy-one thousand, two hundred nineteen".