1388534 has 8 divisors (see below), whose sum is σ = 2380368. Its totient is φ = 595080.

The previous prime is 1388483. The next prime is 1388587. The reversal of 1388534 is 4358831.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1388534.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49577 + ... + 49604.

It is an arithmetic number, because the mean of its divisors is an integer number (297546).

2^1388534 is an apocalyptic number.

1388534 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1388534 is a deficient number, since it is larger than the sum of its proper divisors (991834).

1388534 is an equidigital number, since it uses as much as digits as its factorization.

1388534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99190.

The product of its digits is 11520, while the sum is 32.

The square root of 1388534 is about 1178.3607257542. The cubic root of 1388534 is about 111.5626545649.

The spelling of 1388534 in words is "one million, three hundred eighty-eight thousand, five hundred thirty-four".