1438985 has 8 divisors (see below), whose sum is σ = 1749120. Its totient is φ = 1136304.

The previous prime is 1438979. The next prime is 1438991. The reversal of 1438985 is 5898341.

1438985 = T₁₅₀ + T₁₅₁ + ... + T₂₂₈.

It is an interprime number because it is at equal distance from previous prime (1438979) and next prime (1438991).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1438985 - 2⁸ = 1438729 is a prime.

It is an alternating number because its digits alternate between odd and even.

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 7 ways as a sum of consecutive naturals, for example, 1427 + ... + 2216.

It is an arithmetic number, because the mean of its divisors is an integer number (218640).

2^1438985 is an apocalyptic number.

It is an amenable number.

1438985 is a deficient number, since it is larger than the sum of its proper divisors (310135).

1438985 is an equidigital number, since it uses as much as digits as its factorization.

1438985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3727.

The product of its digits is 34560, while the sum is 38.

The square root of 1438985 is about 1199.5770087827. The cubic root of 1438985 is about 112.8977852415.

The spelling of 1438985 in words is "one million, four hundred thirty-eight thousand, nine hundred eighty-five".