1388964 has 24 divisors (see below), whose sum is σ = 3260320. Its totient is φ = 460224.

The previous prime is 1388963. The next prime is 1388969. The reversal of 1388964 is 4698831.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1388963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3192 + ... + 3600.

2^1388964 is an apocalyptic number.

It is an amenable number.

1388964 is an abundant number, since it is smaller than the sum of its proper divisors (1871356).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1388964 is a wasteful number, since it uses less digits than its factorization.

1388964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 699 (or 697 counting only the distinct ones).

The product of its digits is 41472, while the sum is 39.

The square root of 1388964 is about 1178.5431684924. The cubic root of 1388964 is about 111.5741695849.

The spelling of 1388964 in words is "one million, three hundred eighty-eight thousand, nine hundred sixty-four".