139081417 has 8 divisors (see below), whose sum is σ = 140756256. Its totient is φ = 137414592.

The previous prime is 139081399. The next prime is 139081421. The reversal of 139081417 is 714180931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 139081417 - 2⁷ = 139081289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139082417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37438 + ... + 40984.

It is an arithmetic number, because the mean of its divisors is an integer number (17594532).

Almost surely, 2^139081417 is an apocalyptic number.

It is an amenable number.

139081417 is a deficient number, since it is larger than the sum of its proper divisors (1674839).

139081417 is a wasteful number, since it uses less digits than its factorization.

139081417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4007.

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 139081417 is about 11793.2784669913. The cubic root of 139081417 is about 518.1112656838. Note that the first 3 decimals are identical.

The spelling of 139081417 in words is "one hundred thirty-nine million, eighty-one thousand, four hundred seventeen".