451948209 has 8 divisors (see below), whose sum is σ = 623376960. Its totient is φ = 290909136.

The previous prime is 451948187. The next prime is 451948243. The reversal of 451948209 is 902849154.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 451948209 - 2⁹ = 451947697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (451948249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2597317 + ... + 2597490.

It is an arithmetic number, because the mean of its divisors is an integer number (77922120).

Almost surely, 2^451948209 is an apocalyptic number.

It is an amenable number.

451948209 is a deficient number, since it is larger than the sum of its proper divisors (171428751).

451948209 is a wasteful number, since it uses less digits than its factorization.

451948209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5194839.

The product of its (nonzero) digits is 103680, while the sum is 42.

The square root of 451948209 is about 21259.0735687141. The cubic root of 451948209 is about 767.4137150786.

The spelling of 451948209 in words is "four hundred fifty-one million, nine hundred forty-eight thousand, two hundred nine".