1393506 has 12 divisors (see below), whose sum is σ = 3019302. Its totient is φ = 464496.

The previous prime is 1393493. The next prime is 1393523. The reversal of 1393506 is 6053931.

It can be written as a sum of positive squares in only one way, i.e., 1199025 + 194481 = 1095^2 + 441^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1393506.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38691 + ... + 38726.

2^1393506 is an apocalyptic number.

1393506 is an abundant number, since it is smaller than the sum of its proper divisors (1625796).

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

1393506 is a wasteful number, since it uses less digits than its factorization.

1393506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77425 (or 77422 counting only the distinct ones).

The product of its (nonzero) digits is 2430, while the sum is 27.

The square root of 1393506 is about 1180.4685510423. The cubic root of 1393506 is about 111.6956554525.

The spelling of 1393506 in words is "one million, three hundred ninety-three thousand, five hundred six".