900047171 has 4 divisors (see below), whose sum is σ = 900940200. Its totient is φ = 899154144.

The previous prime is 900047143. The next prime is 900047179. The reversal of 900047171 is 171740009.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 171740009 = 7 ⋅24534287.

It is a cyclic number.

It is not a de Polignac number, because 900047171 - 2⁶ = 900047107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (900047179) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 445001 + ... + 447018.

It is an arithmetic number, because the mean of its divisors is an integer number (225235050).

Almost surely, 2^900047171 is an apocalyptic number.

900047171 is a deficient number, since it is larger than the sum of its proper divisors (893029).

900047171 is a wasteful number, since it uses less digits than its factorization.

900047171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 893028.

The product of its (nonzero) digits is 1764, while the sum is 29.

The square root of 900047171 is about 30000.7861730322. The cubic root of 900047171 is about 965.5062521257.

The spelling of 900047171 in words is "nine hundred million, forty-seven thousand, one hundred seventy-one".