471259781 has 4 divisors (see below), whose sum is σ = 482753964. Its totient is φ = 459765600.

The previous prime is 471259769. The next prime is 471259783. The reversal of 471259781 is 187952174.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 187952174 = 2 ⋅93976087.

It can be written as a sum of positive squares in 2 ways, for example, as 16120225 + 455139556 = 4015^2 + 21334^2 .

It is a cyclic number.

It is not a de Polignac number, because 471259781 - 2¹⁰ = 471258757 is a prime.

It is a super-2 number, since 2×471259781² = 444171562376335922, 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 (471259783) 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, 5747030 + ... + 5747111.

It is an arithmetic number, because the mean of its divisors is an integer number (120688491).

Almost surely, 2^471259781 is an apocalyptic number.

471259781 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

471259781 is a deficient number, since it is larger than the sum of its proper divisors (11494183).

471259781 is a wasteful number, since it uses less digits than its factorization.

471259781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11494182.

The product of its digits is 141120, while the sum is 44.

The square root of 471259781 is about 21708.5186274882. The cubic root of 471259781 is about 778.1920546957.

The spelling of 471259781 in words is "four hundred seventy-one million, two hundred fifty-nine thousand, seven hundred eighty-one".