139679228 has 24 divisors (see below), whose sum is σ = 264999840. Its totient is φ = 64036800.

The previous prime is 139679219. The next prime is 139679231. The reversal of 139679228 is 822976931.

It is a happy number.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1043 + ... + 16746.

It is an arithmetic number, because the mean of its divisors is an integer number (11041660).

Almost surely, 2^139679228 is an apocalyptic number.

It is an amenable number.

139679228 is a deficient number, since it is larger than the sum of its proper divisors (125320612).

139679228 is a wasteful number, since it uses less digits than its factorization.

139679228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17957 (or 17955 counting only the distinct ones).

The product of its digits is 326592, while the sum is 47.

The square root of 139679228 is about 11818.5967018086. The cubic root of 139679228 is about 518.8525338911.

The spelling of 139679228 in words is "one hundred thirty-nine million, six hundred seventy-nine thousand, two hundred twenty-eight".