1388099 has 4 divisors (see below), whose sum is σ = 1390464. Its totient is φ = 1385736.

The previous prime is 1388081. The next prime is 1388113. The reversal of 1388099 is 9908831.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1388099 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1388029) 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, 449 + ... + 1725.

It is an arithmetic number, because the mean of its divisors is an integer number (347616).

2^1388099 is an apocalyptic number.

1388099 is a deficient number, since it is larger than the sum of its proper divisors (2365).

1388099 is a wasteful number, since it uses less digits than its factorization.

1388099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2364.

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 1388099 is about 1178.1761328426. The cubic root of 1388099 is about 111.5510032301.

The spelling of 1388099 in words is "one million, three hundred eighty-eight thousand, ninety-nine".