1393965 has 12 divisors (see below), whose sum is σ = 2416284. Its totient is φ = 743424.

The previous prime is 1393963. The next prime is 1393967. The reversal of 1393965 is 5693931.

It is an interprime number because it is at equal distance from previous prime (1393963) and next prime (1393967).

It can be written as a sum of positive squares in 2 ways, for example, as 1108809 + 285156 = 1053^2 + 534^2 .

It is not a de Polignac number, because 1393965 - 2¹ = 1393963 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1393963) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15444 + ... + 15533.

It is an arithmetic number, because the mean of its divisors is an integer number (201357).

2^1393965 is an apocalyptic number.

1393965 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1393965 is a deficient number, since it is larger than the sum of its proper divisors (1022319).

1393965 is a wasteful number, since it uses less digits than its factorization.

1393965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30988 (or 30985 counting only the distinct ones).

The product of its digits is 21870, while the sum is 36.

The square root of 1393965 is about 1180.6629493636. The cubic root of 1393965 is about 111.7079177314.

The spelling of 1393965 in words is "one million, three hundred ninety-three thousand, nine hundred sixty-five".