475889981 has 8 divisors (see below), whose sum is σ = 544323840. Its totient is φ = 407568528.

The previous prime is 475889951. The next prime is 475889983. The reversal of 475889981 is 189988574.

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 475889981 - 2²⁶ = 408781117 is a prime.

It is a super-2 number, since 2×475889981² = 452942548032360722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 475889981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (475889983) 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, 18821 + ... + 36138.

It is an arithmetic number, because the mean of its divisors is an integer number (68040480).

Almost surely, 2^475889981 is an apocalyptic number.

It is an amenable number.

475889981 is a deficient number, since it is larger than the sum of its proper divisors (68433859).

475889981 is a wasteful number, since it uses less digits than its factorization.

475889981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56203.

The product of its digits is 5806080, while the sum is 59.

The square root of 475889981 is about 21814.9027272642. The cubic root of 475889981 is about 780.7323720710.

The spelling of 475889981 in words is "four hundred seventy-five million, eight hundred eighty-nine thousand, nine hundred eighty-one".