1085438 has 4 divisors (see below), whose sum is σ = 1628160. Its totient is φ = 542718.

The previous prime is 1085431. The next prime is 1085443. The reversal of 1085438 is 8345801.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1085438.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1085431) 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, 271358 + ... + 271361.

It is an arithmetic number, because the mean of its divisors is an integer number (407040).

2^1085438 is an apocalyptic number.

1085438 is a deficient number, since it is larger than the sum of its proper divisors (542722).

1085438 is an equidigital number, since it uses as much as digits as its factorization.

1085438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542721.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 1085438 is about 1041.8435583138. The cubic root of 1085438 is about 102.7704694963.

The spelling of 1085438 in words is "one million, eighty-five thousand, four hundred thirty-eight".