139230646 has 16 divisors (see below), whose sum is σ = 226275984. Its totient is φ = 63995904.

The previous prime is 139230643. The next prime is 139230649. The reversal of 139230646 is 646032931.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (139230643) and next prime (139230649).

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139230643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46155 + ... + 49078.

It is an arithmetic number, because the mean of its divisors is an integer number (14142249).

Almost surely, 2^139230646 is an apocalyptic number.

139230646 is a deficient number, since it is larger than the sum of its proper divisors (87045338).

139230646 is a wasteful number, since it uses less digits than its factorization.

139230646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95295.

The product of its (nonzero) digits is 23328, while the sum is 34.

The square root of 139230646 is about 11799.6036374109. The cubic root of 139230646 is about 518.2965039215.

It can be divided in two parts, 139230 and 646, that added together give a square (139876 = 374²).

The spelling of 139230646 in words is "one hundred thirty-nine million, two hundred thirty thousand, six hundred forty-six".