1388707 has 4 divisors (see below), whose sum is σ = 1433536. Its totient is φ = 1343880.

The previous prime is 1388701. The next prime is 1388719. The reversal of 1388707 is 7078831.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7078831 = 829 ⋅8539.

It is a cyclic number.

It is not a de Polignac number, because 1388707 - 2¹¹ = 1386659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1388701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22368 + ... + 22429.

It is an arithmetic number, because the mean of its divisors is an integer number (358384).

2^1388707 is an apocalyptic number.

1388707 is a deficient number, since it is larger than the sum of its proper divisors (44829).

1388707 is an equidigital number, since it uses as much as digits as its factorization.

1388707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44828.

The product of its (nonzero) digits is 9408, while the sum is 34.

The square root of 1388707 is about 1178.4341305308. The cubic root of 1388707 is about 111.5672876378.

The spelling of 1388707 in words is "one million, three hundred eighty-eight thousand, seven hundred seven".