139222930 has 64 divisors (see below), whose sum is σ = 319168512. Its totient is φ = 42459840.

The previous prime is 139222927. The next prime is 139222931. The reversal of 139222930 is 39222931.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 139222892 and 139222901.

It is not an unprimeable number, because it can be changed into a prime (139222931) 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 31 ways as a sum of consecutive naturals, for example, 34267 + ... + 38113.

It is an arithmetic number, because the mean of its divisors is an integer number (4987008).

Almost surely, 2^139222930 is an apocalyptic number.

139222930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139222930 is an abundant number, since it is smaller than the sum of its proper divisors (179945582).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139222930 is a wasteful number, since it uses less digits than its factorization.

139222930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3919.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 139222930 is about 11799.2766727457. The cubic root of 139222930 is about 518.2869292820.

Subtracting from 139222930 its reverse (39222931), we obtain a palindrome (99999999).

The spelling of 139222930 in words is "one hundred thirty-nine million, two hundred twenty-two thousand, nine hundred thirty".