47499440 has 80 divisors (see below), whose sum is σ = 115706880. Its totient is φ = 18113280.

The previous prime is 47499433. The next prime is 47499451. The reversal of 47499440 is 4499474.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 265271 + ... + 265449.

It is an arithmetic number, because the mean of its divisors is an integer number (1446336).

Almost surely, 2^47499440 is an apocalyptic number.

47499440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47499440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57853440).

47499440 is an abundant number, since it is smaller than the sum of its proper divisors (68207440).

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

47499440 is a wasteful number, since it uses less digits than its factorization.

47499440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330 (or 324 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 47499440 is about 6891.9837492554. The cubic root of 47499440 is about 362.1563989498.

The spelling of 47499440 in words is "forty-seven million, four hundred ninety-nine thousand, four hundred forty".