47478405 has 16 divisors (see below), whose sum is σ = 81809280. Its totient is φ = 23373888.

The previous prime is 47478401. The next prime is 47478427. The reversal of 47478405 is 50487474.

47478405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 47478405 - 2² = 47478401 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47478401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121545 + ... + 121934.

It is an arithmetic number, because the mean of its divisors is an integer number (5113080).

Almost surely, 2^47478405 is an apocalyptic number.

It is an amenable number.

47478405 is a deficient number, since it is larger than the sum of its proper divisors (34330875).

47478405 is a wasteful number, since it uses less digits than its factorization.

47478405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243500.

The product of its (nonzero) digits is 125440, while the sum is 39.

The square root of 47478405 is about 6890.4575319786. The cubic root of 47478405 is about 362.1029310587.

The spelling of 47478405 in words is "forty-seven million, four hundred seventy-eight thousand, four hundred five".