47865447 has 24 divisors (see below), whose sum is σ = 79387776. Its totient is φ = 27223056.

The previous prime is 47865437. The next prime is 47865469. The reversal of 47865447 is 74456874.

It is not a de Polignac number, because 47865447 - 2¹⁰ = 47864423 is a prime.

It is a super-2 number, since 2×47865447² = 4582202033019618, which contains 22 as substring.

Its product of digits (752640) is a multiple of the sum of its prime divisors (3584).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47865437) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12628 + ... + 15974.

It is an arithmetic number, because the mean of its divisors is an integer number (3307824).

Almost surely, 2^47865447 is an apocalyptic number.

47865447 is a deficient number, since it is larger than the sum of its proper divisors (31522329).

47865447 is a wasteful number, since it uses less digits than its factorization.

47865447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3587 (or 3584 counting only the distinct ones).

The product of its digits is 752640, while the sum is 45.

The square root of 47865447 is about 6918.4858892680. The cubic root of 47865447 is about 363.0842187852.

The spelling of 47865447 in words is "forty-seven million, eight hundred sixty-five thousand, four hundred forty-seven".