449999987 has 2 divisors, whose sum is σ = 449999988. Its totient is φ = 449999986.

The previous prime is 449999981. The next prime is 449999993. The reversal of 449999987 is 789999944.

It is a balanced prime because it is at equal distance from previous prime (449999981) and next prime (449999993).

It is a cyclic number.

It is not a de Polignac number, because 449999987 - 2⁸ = 449999731 is a prime.

It is not a weakly prime, because it can be changed into another prime (449999981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224999993 + 224999994.

It is an arithmetic number, because the mean of its divisors is an integer number (224999994).

Almost surely, 2^449999987 is an apocalyptic number.

449999987 is a deficient number, since it is larger than the sum of its proper divisors (1).

449999987 is an equidigital number, since it uses as much as digits as its factorization.

449999987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52907904, while the sum is 68.

The square root of 449999987 is about 21213.2031291835. The cubic root of 449999987 is about 766.3094250143.

The spelling of 449999987 in words is "four hundred forty-nine million, nine hundred ninety-nine thousand, nine hundred eighty-seven".