139872667 has 8 divisors (see below), whose sum is σ = 154303920. Its totient is φ = 125727360.

The previous prime is 139872653. The next prime is 139872673. The reversal of 139872667 is 766278931.

It is a happy number.

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

It is not a de Polignac number, because 139872667 - 2²⁷ = 5654939 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 139872667.

It is not an unprimeable number, because it can be changed into a prime (139872767) 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, 70458 + ... + 72415.

It is an arithmetic number, because the mean of its divisors is an integer number (19287990).

Almost surely, 2^139872667 is an apocalyptic number.

139872667 is a deficient number, since it is larger than the sum of its proper divisors (14431253).

139872667 is a wasteful number, since it uses less digits than its factorization.

139872667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142973.

The product of its digits is 762048, while the sum is 49.

The square root of 139872667 is about 11826.7775408181. Note that the first 3 decimals coincide. The cubic root of 139872667 is about 519.0919396127.

The spelling of 139872667 in words is "one hundred thirty-nine million, eight hundred seventy-two thousand, six hundred sixty-seven".