139108473 has 12 divisors (see below), whose sum is σ = 229639488. Its totient is φ = 79490520.

The previous prime is 139108423. The next prime is 139108499. The reversal of 139108473 is 374801931.

It is a happy number.

It is not a de Polignac number, because 139108473 - 2⁸ = 139108217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (139108423) 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 11 ways as a sum of consecutive naturals, for example, 1103973 + ... + 1104098.

It is an arithmetic number, because the mean of its divisors is an integer number (19136624).

Almost surely, 2^139108473 is an apocalyptic number.

It is an amenable number.

139108473 is a deficient number, since it is larger than the sum of its proper divisors (90531015).

139108473 is a wasteful number, since it uses less digits than its factorization.

139108473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2208084 (or 2208081 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 139108473 is about 11794.4255052970. The cubic root of 139108473 is about 518.1448601779.

The spelling of 139108473 in words is "one hundred thirty-nine million, one hundred eight thousand, four hundred seventy-three".