1339678 has 4 divisors (see below), whose sum is σ = 2009520. Its totient is φ = 669838.

The previous prime is 1339673. The next prime is 1339687. The reversal of 1339678 is 8769331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8769331 = 17 ⋅515843.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1339673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334918 + ... + 334921.

It is an arithmetic number, because the mean of its divisors is an integer number (502380).

2^1339678 is an apocalyptic number.

1339678 is a deficient number, since it is larger than the sum of its proper divisors (669842).

1339678 is an equidigital number, since it uses as much as digits as its factorization.

1339678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669841.

The product of its digits is 27216, while the sum is 37.

The square root of 1339678 is about 1157.4445991062. Note that the first 3 decimals coincide. The cubic root of 1339678 is about 110.2385456775.

The spelling of 1339678 in words is "one million, three hundred thirty-nine thousand, six hundred seventy-eight".