454985987 has 2 divisors, whose sum is σ = 454985988. Its totient is φ = 454985986.

The previous prime is 454985981. The next prime is 454986013. The reversal of 454985987 is 789589454.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-454985987 is a prime.

It is not a weakly prime, because it can be changed into another prime (454985981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 227492993 + 227492994.

It is an arithmetic number, because the mean of its divisors is an integer number (227492994).

Almost surely, 2^454985987 is an apocalyptic number.

454985987 is a deficient number, since it is larger than the sum of its proper divisors (1).

454985987 is an equidigital number, since it uses as much as digits as its factorization.

454985987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14515200, while the sum is 59.

The square root of 454985987 is about 21330.4005353861. The cubic root of 454985987 is about 769.1292721056.

The spelling of 454985987 in words is "four hundred fifty-four million, nine hundred eighty-five thousand, nine hundred eighty-seven".