471121913 has 4 divisors (see below), whose sum is σ = 472608420. Its totient is φ = 469635408.

The previous prime is 471121909. The next prime is 471121921. The reversal of 471121913 is 319121174.

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 119071744 + 352050169 = 10912^2 + 18763^2 .

It is a cyclic number.

It is not a de Polignac number, because 471121913 - 2² = 471121909 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (471121933) 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, 742778 + ... + 743411.

It is an arithmetic number, because the mean of its divisors is an integer number (118152105).

Almost surely, 2^471121913 is an apocalyptic number.

It is an amenable number.

471121913 is a deficient number, since it is larger than the sum of its proper divisors (1486507).

471121913 is a wasteful number, since it uses less digits than its factorization.

471121913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1486506.

The product of its digits is 1512, while the sum is 29.

The square root of 471121913 is about 21705.3429597415. The cubic root of 471121913 is about 778.1161600755.

The spelling of 471121913 in words is "four hundred seventy-one million, one hundred twenty-one thousand, nine hundred thirteen".