459821749 has 4 divisors (see below), whose sum is σ = 459927936. Its totient is φ = 459715564.

The previous prime is 459821741. The next prime is 459821753. The reversal of 459821749 is 947128954.

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, and also an emirpimes, since its reverse is a distinct semiprime: 947128954 = 2 ⋅473564477.

It is a cyclic number.

It is not a de Polignac number, because 459821749 - 2³ = 459821741 is a prime.

It is a super-2 number, since 2×459821749² = 422872081706838002, 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 (459821741) 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, 46309 + ... + 55354.

It is an arithmetic number, because the mean of its divisors is an integer number (114981984).

Almost surely, 2^459821749 is an apocalyptic number.

It is an amenable number.

459821749 is a deficient number, since it is larger than the sum of its proper divisors (106187).

459821749 is a wasteful number, since it uses less digits than its factorization.

459821749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106186.

The product of its digits is 725760, while the sum is 49.

The square root of 459821749 is about 21443.4546890187. The cubic root of 459821749 is about 771.8445400274.

The spelling of 459821749 in words is "four hundred fifty-nine million, eight hundred twenty-one thousand, seven hundred forty-nine".