47139323 has 24 divisors (see below), whose sum is σ = 62982720. Its totient is φ = 34791120.

The previous prime is 47139277. The next prime is 47139341. The reversal of 47139323 is 32393174.

It is not a de Polignac number, because 47139323 - 2¹⁴ = 47122939 is a prime.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 47139323.

It is not an unprimeable number, because it can be changed into a prime (47139353) 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 23 ways as a sum of consecutive naturals, for example, 7940 + ... + 12542.

It is an arithmetic number, because the mean of its divisors is an integer number (2624280).

Almost surely, 2^47139323 is an apocalyptic number.

47139323 is a deficient number, since it is larger than the sum of its proper divisors (15843397).

47139323 is a wasteful number, since it uses less digits than its factorization.

47139323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4647 (or 4640 counting only the distinct ones).

The product of its digits is 13608, while the sum is 32.

The square root of 47139323 is about 6865.8082554059. The cubic root of 47139323 is about 361.2388466522.

The spelling of 47139323 in words is "forty-seven million, one hundred thirty-nine thousand, three hundred twenty-three".