47172867 has 32 divisors (see below), whose sum is σ = 73602048. Its totient is φ = 26320896.

The previous prime is 47172859. The next prime is 47172869. The reversal of 47172867 is 76827174.

It is not a de Polignac number, because 47172867 - 2³ = 47172859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47172869) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 244323 + ... + 244515.

It is an arithmetic number, because the mean of its divisors is an integer number (2300064).

Almost surely, 2^47172867 is an apocalyptic number.

47172867 is a deficient number, since it is larger than the sum of its proper divisors (26429181).

47172867 is a wasteful number, since it uses less digits than its factorization.

47172867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419.

The product of its digits is 131712, while the sum is 42.

The square root of 47172867 is about 6868.2506506388. The cubic root of 47172867 is about 361.3245113162.

The spelling of 47172867 in words is "forty-seven million, one hundred seventy-two thousand, eight hundred sixty-seven".