47507939 has 4 divisors (see below), whose sum is σ = 47521800. Its totient is φ = 47494080.

The previous prime is 47507917. The next prime is 47507947. The reversal of 47507939 is 93970574.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 47507939 - 2⁸ = 47507683 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 47507939.

It is not an unprimeable number, because it can be changed into a prime (47507909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2387 + ... + 10035.

It is an arithmetic number, because the mean of its divisors is an integer number (11880450).

Almost surely, 2^47507939 is an apocalyptic number.

47507939 is a deficient number, since it is larger than the sum of its proper divisors (13861).

47507939 is an equidigital number, since it uses as much as digits as its factorization.

47507939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13860.

The product of its (nonzero) digits is 238140, while the sum is 44.

The square root of 47507939 is about 6892.6003075762. The cubic root of 47507939 is about 362.1779976864.

The spelling of 47507939 in words is "forty-seven million, five hundred seven thousand, nine hundred thirty-nine".