475635389 has 4 divisors (see below), whose sum is σ = 476128224. Its totient is φ = 475142556.

The previous prime is 475635373. The next prime is 475635439. The reversal of 475635389 is 983536574.

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, and also an emirpimes, since its reverse is a distinct semiprime: 983536574 = 2 ⋅491768287.

It is a cyclic number.

It is not a de Polignac number, because 475635389 - 2⁴ = 475635373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (475635289) 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, 244967 + ... + 246900.

It is an arithmetic number, because the mean of its divisors is an integer number (119032056).

Almost surely, 2^475635389 is an apocalyptic number.

It is an amenable number.

475635389 is a deficient number, since it is larger than the sum of its proper divisors (492835).

475635389 is an equidigital number, since it uses as much as digits as its factorization.

475635389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492834.

The product of its digits is 2721600, while the sum is 50.

The square root of 475635389 is about 21809.0666696216. The cubic root of 475635389 is about 780.5931216278.

The spelling of 475635389 in words is "four hundred seventy-five million, six hundred thirty-five thousand, three hundred eighty-nine".