139793471 has 8 divisors (see below), whose sum is σ = 146228064. Its totient is φ = 133388640.

The previous prime is 139793447. The next prime is 139793483. The reversal of 139793471 is 174397931.

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 139793471 - 2¹⁴ = 139777087 is a prime.

It is a super-3 number, since 3×139793471³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139793671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2465 + ... + 16901.

It is an arithmetic number, because the mean of its divisors is an integer number (18278508).

Almost surely, 2^139793471 is an apocalyptic number.

139793471 is a deficient number, since it is larger than the sum of its proper divisors (6434593).

139793471 is a wasteful number, since it uses less digits than its factorization.

139793471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14881.

The product of its digits is 142884, while the sum is 44.

The square root of 139793471 is about 11823.4289019726. The cubic root of 139793471 is about 518.9939510459.

The spelling of 139793471 in words is "one hundred thirty-nine million, seven hundred ninety-three thousand, four hundred seventy-one".