47144427 has 16 divisors (see below), whose sum is σ = 68694912. Its totient is φ = 28521920.

The previous prime is 47144413. The next prime is 47144429. The reversal of 47144427 is 72444174.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 47144427 - 2⁷ = 47144299 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (47144429) 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, 27448 + ... + 29114.

It is an arithmetic number, because the mean of its divisors is an integer number (4293432).

Almost surely, 2^47144427 is an apocalyptic number.

47144427 is a deficient number, since it is larger than the sum of its proper divisors (21550485).

47144427 is a wasteful number, since it uses less digits than its factorization.

47144427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2538.

The product of its digits is 25088, while the sum is 33.

The square root of 47144427 is about 6866.1799422969. The cubic root of 47144427 is about 361.2518838677.

The spelling of 47144427 in words is "forty-seven million, one hundred forty-four thousand, four hundred twenty-seven".