139796471 has 16 divisors (see below), whose sum is σ = 154383360. Its totient is φ = 126087840.

The previous prime is 139796413. The next prime is 139796513. The reversal of 139796471 is 174697931.

It is not a de Polignac number, because 139796471 - 2⁶ = 139796407 is a prime.

It is a super-3 number, since 3×139796471³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139796171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30926 + ... + 35156.

It is an arithmetic number, because the mean of its divisors is an integer number (9648960).

Almost surely, 2^139796471 is an apocalyptic number.

139796471 is a deficient number, since it is larger than the sum of its proper divisors (14586889).

139796471 is a wasteful number, since it uses less digits than its factorization.

139796471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4334.

The product of its digits is 285768, while the sum is 47.

The square root of 139796471 is about 11823.5557680420. Note that the first 3 decimals coincide. The cubic root of 139796471 is about 518.9976635958.

The spelling of 139796471 in words is "one hundred thirty-nine million, seven hundred ninety-six thousand, four hundred seventy-one".