139830417 has 12 divisors (see below), whose sum is σ = 202395024. Its totient is φ = 93027480.

The previous prime is 139830331. The next prime is 139830419. The reversal of 139830417 is 714038931.

It is a happy number.

It is not a de Polignac number, because 139830417 - 2⁸ = 139830161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (139830419) 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, 11403 + ... + 20240.

It is an arithmetic number, because the mean of its divisors is an integer number (16866252).

Almost surely, 2^139830417 is an apocalyptic number.

It is an amenable number.

139830417 is a deficient number, since it is larger than the sum of its proper divisors (62564607).

139830417 is a wasteful number, since it uses less digits than its factorization.

139830417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32140 (or 32137 counting only the distinct ones).

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

The square root of 139830417 is about 11824.9912050707. The cubic root of 139830417 is about 519.0396686353.

The spelling of 139830417 in words is "one hundred thirty-nine million, eight hundred thirty thousand, four hundred seventeen".