450749 has 4 divisors (see below), whose sum is σ = 485436. Its totient is φ = 416064.

The previous prime is 450727. The next prime is 450761. The reversal of 450749 is 947054.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 947054 = 2 ⋅473527.

It can be written as a sum of positive squares in 2 ways, for example, as 47524 + 403225 = 218^2 + 635^2 .

It is a cyclic number.

It is not a de Polignac number, because 450749 - 2⁸ = 450493 is a prime.

It is a super-2 number, since 2×450749² = 406349322002, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (450719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17324 + ... + 17349.

It is an arithmetic number, because the mean of its divisors is an integer number (121359).

2⁴⁵⁰⁷⁴⁹ is an apocalyptic number.

It is an amenable number.

450749 is a deficient number, since it is larger than the sum of its proper divisors (34687).

450749 is a wasteful number, since it uses less digits than its factorization.

450749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34686.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 450749 is about 671.3784327784. The cubic root of 450749 is about 76.6734356552.

The spelling of 450749 in words is "four hundred fifty thousand, seven hundred forty-nine".