1393488 has 30 divisors (see below), whose sum is σ = 3900234. Its totient is φ = 464448.

The previous prime is 1393471. The next prime is 1393489. The reversal of 1393488 is 8843931.

It can be written as a sum of positive squares in only one way, i.e., 1272384 + 121104 = 1128^2 + 348^2 .

It is a super-2 number, since 2×1393488² = 3883617612288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1393489) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4695 + ... + 4982.

2^1393488 is an apocalyptic number.

1393488 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1393488 is an abundant number, since it is smaller than the sum of its proper divisors (2506746).

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

1393488 is a wasteful number, since it uses less digits than its factorization.

1393488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9691 (or 9682 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 1393488 is about 1180.4609269264. The cubic root of 1393488 is about 111.6951745239.

It can be divided in two parts, 1393 and 488, that added together give a palindrome (1881).

The spelling of 1393488 in words is "one million, three hundred ninety-three thousand, four hundred eighty-eight".