139679619 has 8 divisors (see below), whose sum is σ = 187980480. Its totient is φ = 92249256.

The previous prime is 139679611. The next prime is 139679623. The reversal of 139679619 is 916976931.

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

It is not a de Polignac number, because 139679619 - 2³ = 139679611 is a prime.

It is a super-2 number, since 2×139679619² = 39020791927970322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (139679611) 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 7 ways as a sum of consecutive naturals, for example, 217249 + ... + 217890.

It is an arithmetic number, because the mean of its divisors is an integer number (23497560).

Almost surely, 2^139679619 is an apocalyptic number.

139679619 is a deficient number, since it is larger than the sum of its proper divisors (48300861).

139679619 is a wasteful number, since it uses less digits than its factorization.

139679619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435249.

The product of its digits is 551124, while the sum is 51.

The square root of 139679619 is about 11818.6132435240. The cubic root of 139679619 is about 518.8530180269.

The spelling of 139679619 in words is "one hundred thirty-nine million, six hundred seventy-nine thousand, six hundred nineteen".