139218662 has 32 divisors (see below), whose sum is σ = 240883200. Its totient is φ = 59680800.

The previous prime is 139218659. The next prime is 139218691. The reversal of 139218662 is 266812931.

It is a happy number.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 112664 + ... + 113892.

It is an arithmetic number, because the mean of its divisors is an integer number (7527600).

Almost surely, 2^139218662 is an apocalyptic number.

139218662 is a deficient number, since it is larger than the sum of its proper divisors (101664538).

139218662 is a wasteful number, since it uses less digits than its factorization.

139218662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1532.

The product of its digits is 31104, while the sum is 38.

The square root of 139218662 is about 11799.0958128155. The cubic root of 139218662 is about 518.2816330491.

The spelling of 139218662 in words is "one hundred thirty-nine million, two hundred eighteen thousand, six hundred sixty-two".