139616867 has 4 divisors (see below), whose sum is σ = 150356640. Its totient is φ = 128877096.

The previous prime is 139616863. The next prime is 139616879. The reversal of 139616867 is 768616931.

It is a happy number.

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 139616867 - 2² = 139616863 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139616863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5369867 + ... + 5369892.

It is an arithmetic number, because the mean of its divisors is an integer number (37589160).

Almost surely, 2^139616867 is an apocalyptic number.

139616867 is a deficient number, since it is larger than the sum of its proper divisors (10739773).

139616867 is a wasteful number, since it uses less digits than its factorization.

139616867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10739772.

The product of its digits is 326592, while the sum is 47.

The square root of 139616867 is about 11815.9581498920. The cubic root of 139616867 is about 518.7753069959.

The spelling of 139616867 in words is "one hundred thirty-nine million, six hundred sixteen thousand, eight hundred sixty-seven".