1393929 has 10 divisors (see below), whose sum is σ = 2082410. Its totient is φ = 929232.

The previous prime is 1393927. The next prime is 1393933. The reversal of 1393929 is 9293931.

It can be written as a sum of positive squares in only one way, i.e., 1166400 + 227529 = 1080^2 + 477^2 .

It is not a de Polignac number, because 1393929 - 2¹ = 1393927 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1393893 and 1393902.

It is not an unprimeable number, because it can be changed into a prime (1393921) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 8524 + ... + 8685.

It is an arithmetic number, because the mean of its divisors is an integer number (208241).

2^1393929 is an apocalyptic number.

It is an amenable number.

1393929 is a deficient number, since it is larger than the sum of its proper divisors (688481).

1393929 is an equidigital number, since it uses as much as digits as its factorization.

1393929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17221 (or 17212 counting only the distinct ones).

The product of its digits is 13122, while the sum is 36.

The square root of 1393929 is about 1180.6477035932. The cubic root of 1393929 is about 111.7069560813.

The spelling of 1393929 in words is "one million, three hundred ninety-three thousand, nine hundred twenty-nine".