47999440 has 20 divisors (see below), whose sum is σ = 111598884. Its totient is φ = 19199744.

The previous prime is 47999401. The next prime is 47999461. The reversal of 47999440 is 4499974.

47999440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 5645376 + 42354064 = 2376^2 + 6508^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 299917 + ... + 300076.

Almost surely, 2^47999440 is an apocalyptic number.

47999440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47999440 is an abundant number, since it is smaller than the sum of its proper divisors (63599444).

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

47999440 is a wasteful number, since it uses less digits than its factorization.

47999440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600006 (or 600000 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 47999440 is about 6928.1628156388. The cubic root of 47999440 is about 363.4227052449.

The spelling of 47999440 in words is "forty-seven million, nine hundred ninety-nine thousand, four hundred forty".