47884385 has 4 divisors (see below), whose sum is σ = 57461268. Its totient is φ = 38307504.

The previous prime is 47884381. The next prime is 47884439. The reversal of 47884385 is 58348874.

47884385 = T₄₃₇₄ + T₄₃₇₅ + ... + T₄₃₇₈.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5997601 + 41886784 = 2449^2 + 6472^2 .

It is a cyclic number.

It is not a de Polignac number, because 47884385 - 2² = 47884381 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47884381) 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, 4788434 + ... + 4788443.

It is an arithmetic number, because the mean of its divisors is an integer number (14365317).

Almost surely, 2^47884385 is an apocalyptic number.

It is an amenable number.

47884385 is a deficient number, since it is larger than the sum of its proper divisors (9576883).

47884385 is an equidigital number, since it uses as much as digits as its factorization.

47884385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9576882.

The product of its digits is 860160, while the sum is 47.

The square root of 47884385 is about 6919.8544059828. The cubic root of 47884385 is about 363.1320973192.

The spelling of 47884385 in words is "forty-seven million, eight hundred eighty-four thousand, three hundred eighty-five".