139167928 has 16 divisors (see below), whose sum is σ = 269357760. Its totient is φ = 67339200.

The previous prime is 139167923. The next prime is 139167943. The reversal of 139167928 is 829761931.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139167923) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 280333 + ... + 280828.

It is an arithmetic number, because the mean of its divisors is an integer number (16834860).

Almost surely, 2^139167928 is an apocalyptic number.

It is an amenable number.

139167928 is a deficient number, since it is larger than the sum of its proper divisors (130189832).

139167928 is a wasteful number, since it uses less digits than its factorization.

139167928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561198 (or 561194 counting only the distinct ones).

The product of its digits is 163296, while the sum is 46.

The square root of 139167928 is about 11796.9457064106. The cubic root of 139167928 is about 518.2186680827.

The spelling of 139167928 in words is "one hundred thirty-nine million, one hundred sixty-seven thousand, nine hundred twenty-eight".