1393945 has 8 divisors (see below), whose sum is σ = 1911744. Its totient is φ = 955824.

The previous prime is 1393939. The next prime is 1393957. The reversal of 1393945 is 5493931.

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

It is a cyclic number.

It is not a de Polignac number, because 1393945 - 2³ = 1393937 is a prime.

It is a Duffinian number.

1393945 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1393945.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19879 + ... + 19948.

It is an arithmetic number, because the mean of its divisors is an integer number (238968).

2^1393945 is an apocalyptic number.

It is an amenable number.

1393945 is a deficient number, since it is larger than the sum of its proper divisors (517799).

1393945 is an equidigital number, since it uses as much as digits as its factorization.

1393945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39839.

The product of its digits is 14580, while the sum is 34.

The square root of 1393945 is about 1180.6544795155. The cubic root of 1393945 is about 111.7073834834.

The spelling of 1393945 in words is "one million, three hundred ninety-three thousand, nine hundred forty-five".