47944140 has 48 divisors (see below), whose sum is σ = 137372928. Its totient is φ = 12487104.

The previous prime is 47944133. The next prime is 47944147. The reversal of 47944140 is 4144974.

It is an interprime number because it is at equal distance from previous prime (47944133) and next prime (47944147).

It is not an unprimeable number, because it can be changed into a prime (47944147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6712 + ... + 11871.

It is an arithmetic number, because the mean of its divisors is an integer number (2861936).

Almost surely, 2^47944140 is an apocalyptic number.

It is an amenable number.

47944140 is an abundant number, since it is smaller than the sum of its proper divisors (89428788).

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

47944140 is a wasteful number, since it uses less digits than its factorization.

47944140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18638 (or 18636 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 47944140 is about 6924.1707084675. The cubic root of 47944140 is about 363.2830855706.

It can be divided in two parts, 47944 and 140, that added together give a palindrome (48084).

The spelling of 47944140 in words is "forty-seven million, nine hundred forty-four thousand, one hundred forty".