4487985 has 12 divisors (see below), whose sum is σ = 7779252. Its totient is φ = 2393568.

The previous prime is 4487969. The next prime is 4488007. The reversal of 4487985 is 5897844.

It can be written as a sum of positive squares in 2 ways, for example, as 3069504 + 1418481 = 1752^2 + 1191^2 .

It is not a de Polignac number, because 4487985 - 2⁴ = 4487969 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 99733 = 4487985 / (4 + 4 + 8 + 7 + 9 + 8 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 4487985.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49822 + ... + 49911.

It is an arithmetic number, because the mean of its divisors is an integer number (648271).

Almost surely, 2^4487985 is an apocalyptic number.

4487985 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4487985 is a deficient number, since it is larger than the sum of its proper divisors (3291267).

4487985 is a wasteful number, since it uses less digits than its factorization.

4487985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99744 (or 99741 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 4487985 is about 2118.4864880381. The cubic root of 4487985 is about 164.9492957150.

The spelling of 4487985 in words is "four million, four hundred eighty-seven thousand, nine hundred eighty-five".