1338723 has 6 divisors (see below), whose sum is σ = 1933724. Its totient is φ = 892476.

The previous prime is 1338703. The next prime is 1338731. The reversal of 1338723 is 3278331.

It is a de Polignac number, because none of the positive numbers 2^k-1338723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1338703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 74365 + ... + 74382.

2^1338723 is an apocalyptic number.

1338723 is a deficient number, since it is larger than the sum of its proper divisors (595001).

1338723 is a wasteful number, since it uses less digits than its factorization.

1338723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148753 (or 148750 counting only the distinct ones).

The product of its digits is 3024, while the sum is 27.

The square root of 1338723 is about 1157.0319788148. The cubic root of 1338723 is about 110.2123446458.

It can be divided in two parts, 1 and 338723, that added together give a square (338724 = 582²).

The spelling of 1338723 in words is "one million, three hundred thirty-eight thousand, seven hundred twenty-three".