471497381 has 4 divisors (see below), whose sum is σ = 480393612. Its totient is φ = 462601152.

The previous prime is 471497371. The next prime is 471497441. The reversal of 471497381 is 183794174.

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 417548356 + 53949025 = 20434^2 + 7345^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-471497381 is a prime.

It is a super-2 number, since 2×471497381² = 444619560579718322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (471497311) 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, 4448036 + ... + 4448141.

It is an arithmetic number, because the mean of its divisors is an integer number (120098403).

Almost surely, 2^471497381 is an apocalyptic number.

It is an amenable number.

471497381 is a deficient number, since it is larger than the sum of its proper divisors (8896231).

471497381 is an equidigital number, since it uses as much as digits as its factorization.

471497381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8896230.

The product of its digits is 169344, while the sum is 44.

The square root of 471497381 is about 21713.9904439511. The cubic root of 471497381 is about 778.3228158132.

The spelling of 471497381 in words is "four hundred seventy-one million, four hundred ninety-seven thousand, three hundred eighty-one".