47847797 has 4 divisors (see below), whose sum is σ = 49928160. Its totient is φ = 45767436.

The previous prime is 47847781. The next prime is 47847803. The reversal of 47847797 is 79774874.

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 an emirpimes, since its reverse is a distinct semiprime: 79774874 = 2 ⋅39887437.

It is a cyclic number.

It is not a de Polignac number, because 47847797 - 2⁴ = 47847781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47847727) 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, 1040147 + ... + 1040192.

It is an arithmetic number, because the mean of its divisors is an integer number (12482040).

Almost surely, 2^47847797 is an apocalyptic number.

It is an amenable number.

47847797 is a deficient number, since it is larger than the sum of its proper divisors (2080363).

47847797 is a wasteful number, since it uses less digits than its factorization.

47847797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2080362.

The product of its digits is 2765952, while the sum is 53.

The square root of 47847797 is about 6917.2102035430. The cubic root of 47847797 is about 363.0395851667.

The spelling of 47847797 in words is "forty-seven million, eight hundred forty-seven thousand, seven hundred ninety-seven".