47840365 has 4 divisors (see below), whose sum is σ = 57408444. Its totient is φ = 38272288.

The previous prime is 47840357. The next prime is 47840389. The reversal of 47840365 is 56304874.

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 23367556 + 24472809 = 4834^2 + 4947^2 .

It is a cyclic number.

It is not a de Polignac number, because 47840365 - 2³ = 47840357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4784032 + ... + 4784041.

It is an arithmetic number, because the mean of its divisors is an integer number (14352111).

Almost surely, 2^47840365 is an apocalyptic number.

It is an amenable number.

47840365 is a deficient number, since it is larger than the sum of its proper divisors (9568079).

47840365 is an equidigital number, since it uses as much as digits as its factorization.

47840365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9568078.

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 47840365 is about 6916.6729718847. The cubic root of 47840365 is about 363.0207877154.

It can be divided in two parts, 47840 and 365, that added together give a triangular number (48205 = T₃₁₀).

The spelling of 47840365 in words is "forty-seven million, eight hundred forty thousand, three hundred sixty-five".