459431921 has 4 divisors (see below), whose sum is σ = 494772852. Its totient is φ = 424090992.

The previous prime is 459431899. The next prime is 459431927. The reversal of 459431921 is 129134954.

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 27415696 + 432016225 = 5236^2 + 20785^2 .

It is not a de Polignac number, because 459431921 - 2⁶ = 459431857 is a prime.

It is a super-2 number, since 2×459431921² = 422155380067500482, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (459431927) 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, 17670446 + ... + 17670471.

It is an arithmetic number, because the mean of its divisors is an integer number (123693213).

Almost surely, 2^459431921 is an apocalyptic number.

It is an amenable number.

459431921 is a deficient number, since it is larger than the sum of its proper divisors (35340931).

459431921 is a wasteful number, since it uses less digits than its factorization.

459431921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35340930.

The product of its digits is 38880, while the sum is 38.

The square root of 459431921 is about 21434.3630882749. The cubic root of 459431921 is about 771.6263600605.

The spelling of 459431921 in words is "four hundred fifty-nine million, four hundred thirty-one thousand, nine hundred twenty-one".