139282930 has 16 divisors (see below), whose sum is σ = 252025344. Its totient is φ = 55420720.

The previous prime is 139282903. The next prime is 139282931. The reversal of 139282930 is 39282931.

It is a self number, because there is not a number n which added to its sum of digits gives 139282930.

It is not an unprimeable number, because it can be changed into a prime (139282931) 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, 34552 + ... + 38371.

It is an arithmetic number, because the mean of its divisors is an integer number (15751584).

Almost surely, 2^139282930 is an apocalyptic number.

139282930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139282930 is a deficient number, since it is larger than the sum of its proper divisors (112742414).

139282930 is a wasteful number, since it uses less digits than its factorization.

139282930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73121.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 139282930 is about 11801.8189276060. The cubic root of 139282930 is about 518.3613728371.

Subtracting from 139282930 its reverse (39282931), we obtain a palindrome (99999999).

The spelling of 139282930 in words is "one hundred thirty-nine million, two hundred eighty-two thousand, nine hundred thirty".