475211389 has 4 divisors (see below), whose sum is σ = 475317756. Its totient is φ = 475105024.

The previous prime is 475211381. The next prime is 475211417. The reversal of 475211389 is 983112574.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 314352900 + 160858489 = 17730^2 + 12683^2 .

It is a cyclic number.

It is not a de Polignac number, because 475211389 - 2³ = 475211381 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (475211381) 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, 46174 + ... + 55519.

It is an arithmetic number, because the mean of its divisors is an integer number (118829439).

Almost surely, 2^475211389 is an apocalyptic number.

It is an amenable number.

475211389 is a deficient number, since it is larger than the sum of its proper divisors (106367).

475211389 is a wasteful number, since it uses less digits than its factorization.

475211389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106366.

The product of its digits is 60480, while the sum is 40.

The square root of 475211389 is about 21799.3437745268. The cubic root of 475211389 is about 780.3611022513.

The spelling of 475211389 in words is "four hundred seventy-five million, two hundred eleven thousand, three hundred eighty-nine".