1380434 has 16 divisors (see below), whose sum is σ = 2392416. Its totient is φ = 590400.

The previous prime is 1380427. The next prime is 1380439. The reversal of 1380434 is 4340831.

1380434 is an esthetic number in base 3, because in such base its adjacent digits differ by 1.

It is not an unprimeable number, because it can be changed into a prime (1380439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1472 + ... + 2219.

It is an arithmetic number, because the mean of its divisors is an integer number (149526).

2^1380434 is an apocalyptic number.

1380434 is a deficient number, since it is larger than the sum of its proper divisors (1011982).

1380434 is a wasteful number, since it uses less digits than its factorization.

1380434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3721.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 1380434 is about 1174.9187205930. The cubic root of 1380434 is about 111.3452981352.

The spelling of 1380434 in words is "one million, three hundred eighty thousand, four hundred thirty-four".