471439389 has 4 divisors (see below), whose sum is σ = 628585856. Its totient is φ = 314292924.

The previous prime is 471439357. The next prime is 471439391. The reversal of 471439389 is 983934174.

It is a happy number.

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 471439389 - 2⁵ = 471439357 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (471439789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78573229 + ... + 78573234.

It is an arithmetic number, because the mean of its divisors is an integer number (157146464).

Almost surely, 2^471439389 is an apocalyptic number.

It is an amenable number.

471439389 is a deficient number, since it is larger than the sum of its proper divisors (157146467).

471439389 is a wasteful number, since it uses less digits than its factorization.

471439389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157146466.

The product of its digits is 653184, while the sum is 48.

The square root of 471439389 is about 21712.6550426243. The cubic root of 471439389 is about 778.2909044678.

The spelling of 471439389 in words is "four hundred seventy-one million, four hundred thirty-nine thousand, three hundred eighty-nine".