1238985 has 24 divisors (see below), whose sum is σ = 2343744. Its totient is φ = 600480.

The previous prime is 1238947. The next prime is 1238989. The reversal of 1238985 is 5898321.

It is not a de Polignac number, because 1238985 - 2⁶ = 1238921 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (1238989) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 757 + ... + 1746.

It is an arithmetic number, because the mean of its divisors is an integer number (97656).

2^1238985 is an apocalyptic number.

1238985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1238985 is a deficient number, since it is larger than the sum of its proper divisors (1104759).

1238985 is a wasteful number, since it uses less digits than its factorization.

1238985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2525 (or 2522 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 1238985 is about 1113.0970308109. The cubic root of 1238985 is about 107.4043858679.

The spelling of 1238985 in words is "one million, two hundred thirty-eight thousand, nine hundred eighty-five".