475908881 has 4 divisors (see below), whose sum is σ = 543895872. Its totient is φ = 407921892.

The previous prime is 475908871. The next prime is 475908883. The reversal of 475908881 is 188809574.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 475908881 - 2¹⁴ = 475892497 is a prime.

It is a super-2 number, since 2×475908881² = 452978526029344322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (475908883) 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, 33993485 + ... + 33993498.

It is an arithmetic number, because the mean of its divisors is an integer number (135973968).

Almost surely, 2^475908881 is an apocalyptic number.

It is an amenable number.

475908881 is a deficient number, since it is larger than the sum of its proper divisors (67986991).

475908881 is an equidigital number, since it uses as much as digits as its factorization.

475908881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67986990.

The product of its (nonzero) digits is 645120, while the sum is 50.

The square root of 475908881 is about 21815.3359130681. The cubic root of 475908881 is about 780.7427075457.

The spelling of 475908881 in words is "four hundred seventy-five million, nine hundred eight thousand, eight hundred eighty-one".