47879285 has 4 divisors (see below), whose sum is σ = 57455148. Its totient is φ = 38303424.

The previous prime is 47879281. The next prime is 47879291. The reversal of 47879285 is 58297874.

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 17783089 + 30096196 = 4217^2 + 5486^2 .

It is a cyclic number.

It is not a de Polignac number, because 47879285 - 2² = 47879281 is a prime.

It is a super-2 number, since 2×47879285² = 4584851864222450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47879281) 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, 4787924 + ... + 4787933.

It is an arithmetic number, because the mean of its divisors is an integer number (14363787).

Almost surely, 2^47879285 is an apocalyptic number.

It is an amenable number.

47879285 is a deficient number, since it is larger than the sum of its proper divisors (9575863).

47879285 is an equidigital number, since it uses as much as digits as its factorization.

47879285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9575862.

The product of its digits is 1128960, while the sum is 50.

The square root of 47879285 is about 6919.4858913072. The cubic root of 47879285 is about 363.1192048808.

The spelling of 47879285 in words is "forty-seven million, eight hundred seventy-nine thousand, two hundred eighty-five".