139018699 has 8 divisors (see below), whose sum is σ = 142580592. Its totient is φ = 135471840.

The previous prime is 139018697. The next prime is 139018717. The reversal of 139018699 is 996810931.

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 139018699 - 2¹ = 139018697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139018697) 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 7 ways as a sum of consecutive naturals, for example, 16317 + ... + 23329.

It is an arithmetic number, because the mean of its divisors is an integer number (17822574).

Almost surely, 2^139018699 is an apocalyptic number.

139018699 is a deficient number, since it is larger than the sum of its proper divisors (3561893).

139018699 is an equidigital number, since it uses as much as digits as its factorization.

139018699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7517.

The product of its (nonzero) digits is 104976, while the sum is 46.

The square root of 139018699 is about 11790.6191101231. The cubic root of 139018699 is about 518.0333741659.

The spelling of 139018699 in words is "one hundred thirty-nine million, eighteen thousand, six hundred ninety-nine".