47992417 has 4 divisors (see below), whose sum is σ = 52355376. Its totient is φ = 43629460.

The previous prime is 47992409. The next prime is 47992457. The reversal of 47992417 is 71429974.

47992417 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 47992417 - 2³ = 47992409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47992457) 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 3 ways as a sum of consecutive naturals, for example, 2181463 + ... + 2181484.

It is an arithmetic number, because the mean of its divisors is an integer number (13088844).

Almost surely, 2^47992417 is an apocalyptic number.

It is an amenable number.

47992417 is a deficient number, since it is larger than the sum of its proper divisors (4362959).

47992417 is a wasteful number, since it uses less digits than its factorization.

47992417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4362958.

The product of its digits is 127008, while the sum is 43.

The square root of 47992417 is about 6927.6559527736. The cubic root of 47992417 is about 363.4049797454.

The spelling of 47992417 in words is "forty-seven million, nine hundred ninety-two thousand, four hundred seventeen".