139008218 has 16 divisors (see below), whose sum is σ = 232398720. Its totient is φ = 61972416.

The previous prime is 139008197. The next prime is 139008227. The reversal of 139008218 is 812800931.

It is an unprimeable number.

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, 106946 + ... + 108237.

It is an arithmetic number, because the mean of its divisors is an integer number (14524920).

Almost surely, 2^139008218 is an apocalyptic number.

139008218 is a deficient number, since it is larger than the sum of its proper divisors (93390502).

139008218 is a wasteful number, since it uses less digits than its factorization.

139008218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215221.

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 139008218 is about 11790.1746382316. The cubic root of 139008218 is about 518.0203551877.

The spelling of 139008218 in words is "one hundred thirty-nine million, eight thousand, two hundred eighteen".