47905393 has 4 divisors (see below), whose sum is σ = 47919600. Its totient is φ = 47891188.

The previous prime is 47905387. The next prime is 47905409. The reversal of 47905393 is 39350974.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, 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 47905393 - 2²¹ = 45808241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47905373) 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, 1158 + ... + 9856.

It is an arithmetic number, because the mean of its divisors is an integer number (11979900).

Almost surely, 2^47905393 is an apocalyptic number.

It is an amenable number.

47905393 is a deficient number, since it is larger than the sum of its proper divisors (14207).

47905393 is an equidigital number, since it uses as much as digits as its factorization.

47905393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14206.

The product of its (nonzero) digits is 102060, while the sum is 40.

The square root of 47905393 is about 6921.3721905414. The cubic root of 47905393 is about 363.1851944040.

The spelling of 47905393 in words is "forty-seven million, nine hundred five thousand, three hundred ninety-three".