139420867 has 8 divisors (see below), whose sum is σ = 141262112. Its totient is φ = 137592000.

The previous prime is 139420849. The next prime is 139420877. The reversal of 139420867 is 768024931.

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

It is a cyclic number.

It is not a de Polignac number, because 139420867 - 2⁷ = 139420739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139420877) 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, 20767 + ... + 26647.

It is an arithmetic number, because the mean of its divisors is an integer number (17657764).

Almost surely, 2^139420867 is an apocalyptic number.

139420867 is a deficient number, since it is larger than the sum of its proper divisors (1841245).

139420867 is a wasteful number, since it uses less digits than its factorization.

139420867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6189.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 139420867 is about 11807.6613687893. The cubic root of 139420867 is about 518.5324338141.

The spelling of 139420867 in words is "one hundred thirty-nine million, four hundred twenty thousand, eight hundred sixty-seven".