47909456 has 60 divisors (see below), whose sum is σ = 110112372. Its totient is φ = 20127744.

The previous prime is 47909453. The next prime is 47909473. The reversal of 47909456 is 65490974.

It can be written as a sum of positive squares in 2 ways, for example, as 36240400 + 11669056 = 6020^2 + 3416^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47909453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40976 + ... + 42128.

Almost surely, 2^47909456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47909456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55056186).

47909456 is an abundant number, since it is smaller than the sum of its proper divisors (62202916).

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

47909456 is a wasteful number, since it uses less digits than its factorization.

47909456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1228 (or 1215 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 47909456 is about 6921.6656954811. The cubic root of 47909456 is about 363.1954617221.

The spelling of 47909456 in words is "forty-seven million, nine hundred nine thousand, four hundred fifty-six".