1393930 has 8 divisors (see below), whose sum is σ = 2509092. Its totient is φ = 557568.

The previous prime is 1393927. The next prime is 1393933. The reversal of 1393930 is 393931.

1393930 = 526² + 527² + ... + 530².

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1393927) and next prime (1393933).

It can be written as a sum of positive squares in 2 ways, for example, as 1361889 + 32041 = 1167^2 + 179^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1393933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69687 + ... + 69706.

2^1393930 is an apocalyptic number.

1393930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1393930 is a deficient number, since it is larger than the sum of its proper divisors (1115162).

1393930 is a wasteful number, since it uses less digits than its factorization.

1393930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139400.

The product of its (nonzero) digits is 2187, while the sum is 28.

The square root of 1393930 is about 1180.6481270895. The cubic root of 1393930 is about 111.7069827941.

Subtracting from 1393930 its reverse (393931), we obtain a palindrome (999999).

The spelling of 1393930 in words is "one million, three hundred ninety-three thousand, nine hundred thirty".