47143945 has 8 divisors (see below), whose sum is σ = 56810880. Its totient is φ = 37556400.

The previous prime is 47143919. The next prime is 47143949. The reversal of 47143945 is 54934174.

47143945 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 47143945 - 2⁵ = 47143913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47143949) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 18531 + ... + 20920.

It is an arithmetic number, because the mean of its divisors is an integer number (7101360).

Almost surely, 2^47143945 is an apocalyptic number.

It is an amenable number.

47143945 is a deficient number, since it is larger than the sum of its proper divisors (9666935).

47143945 is a wasteful number, since it uses less digits than its factorization.

47143945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39695.

The product of its digits is 60480, while the sum is 37.

The square root of 47143945 is about 6866.1448426319. The cubic root of 47143945 is about 361.2506527289.

The spelling of 47143945 in words is "forty-seven million, one hundred forty-three thousand, nine hundred forty-five".