471391887 has 8 divisors (see below), whose sum is σ = 639175680. Its totient is φ = 308934680.

The previous prime is 471391873. The next prime is 471391891. The reversal of 471391887 is 788193174.

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

It is a cyclic number.

It is not a de Polignac number, because 471391887 - 2⁴ = 471391871 is a prime.

It is a super-2 number, since 2×471391887² = 444420622258841538, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (471391807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1331439 + ... + 1331792.

It is an arithmetic number, because the mean of its divisors is an integer number (79896960).

Almost surely, 2^471391887 is an apocalyptic number.

471391887 is a deficient number, since it is larger than the sum of its proper divisors (167783793).

471391887 is a wasteful number, since it uses less digits than its factorization.

471391887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2663293.

The product of its digits is 338688, while the sum is 48.

The square root of 471391887 is about 21711.5611368690. The cubic root of 471391887 is about 778.2647635208.

The spelling of 471391887 in words is "four hundred seventy-one million, three hundred ninety-one thousand, eight hundred eighty-seven".