1329478 has 4 divisors (see below), whose sum is σ = 1994220. Its totient is φ = 664738.

The previous prime is 1329457. The next prime is 1329479. The reversal of 1329478 is 8749231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8749231 = 137 ⋅63863.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1329479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332368 + ... + 332371.

It is an arithmetic number, because the mean of its divisors is an integer number (498555).

2^1329478 is an apocalyptic number.

1329478 is a deficient number, since it is larger than the sum of its proper divisors (664742).

1329478 is an equidigital number, since it uses as much as digits as its factorization.

1329478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664741.

The product of its digits is 12096, while the sum is 34.

The square root of 1329478 is about 1153.0299215545. The cubic root of 1329478 is about 109.9580556335.

The spelling of 1329478 in words is "one million, three hundred twenty-nine thousand, four hundred seventy-eight".