1388246 has 4 divisors (see below), whose sum is σ = 2082372. Its totient is φ = 694122.

The previous prime is 1388243. The next prime is 1388269. The reversal of 1388246 is 6428831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6428831 = 269 ⋅23899.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1388243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 347060 + ... + 347063.

It is an arithmetic number, because the mean of its divisors is an integer number (520593).

2^1388246 is an apocalyptic number.

1388246 is a deficient number, since it is larger than the sum of its proper divisors (694126).

1388246 is an equidigital number, since it uses as much as digits as its factorization.

1388246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694125.

The product of its digits is 9216, while the sum is 32.

The square root of 1388246 is about 1178.2385157514. The cubic root of 1388246 is about 111.5549408500.

The spelling of 1388246 in words is "one million, three hundred eighty-eight thousand, two hundred forty-six".