451487983 has 2 divisors, whose sum is σ = 451487984. Its totient is φ = 451487982.

The previous prime is 451487957. The next prime is 451488019. The reversal of 451487983 is 389784154.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 451487983 - 2⁵ = 451487951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (451487383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225743991 + 225743992.

It is an arithmetic number, because the mean of its divisors is an integer number (225743992).

Almost surely, 2^451487983 is an apocalyptic number.

451487983 is a deficient number, since it is larger than the sum of its proper divisors (1).

451487983 is an equidigital number, since it uses as much as digits as its factorization.

451487983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 967680, while the sum is 49.

The square root of 451487983 is about 21248.2465864833. The cubic root of 451487983 is about 767.1531367723.

The spelling of 451487983 in words is "four hundred fifty-one million, four hundred eighty-seven thousand, nine hundred eighty-three".