451494847 has 4 divisors (see below), whose sum is σ = 452018880. Its totient is φ = 450970816.

The previous prime is 451494833. The next prime is 451494859. The reversal of 451494847 is 748494154.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-451494847 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 451494797 and 451494806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451494887) 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, 260722 + ... + 262447.

It is an arithmetic number, because the mean of its divisors is an integer number (113004720).

Almost surely, 2^451494847 is an apocalyptic number.

451494847 is a deficient number, since it is larger than the sum of its proper divisors (524033).

451494847 is an equidigital number, since it uses as much as digits as its factorization.

451494847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524032.

The product of its digits is 645120, while the sum is 46.

The square root of 451494847 is about 21248.4081050793. The cubic root of 451494847 is about 767.1570244450.

The spelling of 451494847 in words is "four hundred fifty-one million, four hundred ninety-four thousand, eight hundred forty-seven".