1393830 has 48 divisors (see below), whose sum is σ = 3841344. Its totient is φ = 349440.

The previous prime is 1393817. The next prime is 1393831. The reversal of 1393830 is 383931.

It is a junction number, because it is equal to n+sod(n) for n = 1393794 and 1393803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1393831) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1075 + ... + 1985.

It is an arithmetic number, because the mean of its divisors is an integer number (80028).

2^1393830 is an apocalyptic number.

1393830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1393830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1920672).

1393830 is an abundant number, since it is smaller than the sum of its proper divisors (2447514).

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

1393830 is a wasteful number, since it uses less digits than its factorization.

1393830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 941 (or 938 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 1393830 is about 1180.6057767096. The cubic root of 1393830 is about 111.7043114582.

It can be divided in two parts, 139 and 3830, that added together give a square (3969 = 63²).

The spelling of 1393830 in words is "one million, three hundred ninety-three thousand, eight hundred thirty".