47844405 has 64 divisors (see below), whose sum is σ = 98081280. Its totient is φ = 21676032.

The previous prime is 47844383. The next prime is 47844463. The reversal of 47844405 is 50444874.

It is not a de Polignac number, because 47844405 - 2¹³ = 47836213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 47844405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 186037 + ... + 186293.

It is an arithmetic number, because the mean of its divisors is an integer number (1532520).

Almost surely, 2^47844405 is an apocalyptic number.

47844405 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

47844405 is an abundant number, since it is smaller than the sum of its proper divisors (50236875).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47844405 is a wasteful number, since it uses less digits than its factorization.

47844405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475 (or 469 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 36.

The square root of 47844405 is about 6916.9650136458. The cubic root of 47844405 is about 363.0310061624.

The spelling of 47844405 in words is "forty-seven million, eight hundred forty-four thousand, four hundred five".