1329407 has 2 divisors, whose sum is σ = 1329408. Its totient is φ = 1329406.

The previous prime is 1329397. The next prime is 1329437. The reversal of 1329407 is 7049231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1329407 - 2¹⁸ = 1067263 is a prime.

It is a Chen prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1329437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 664703 + 664704.

It is an arithmetic number, because the mean of its divisors is an integer number (664704).

2^1329407 is an apocalyptic number.

1329407 is a deficient number, since it is larger than the sum of its proper divisors (1).

1329407 is an equidigital number, since it uses as much as digits as its factorization.

1329407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 1329407 is about 1152.9991326970. Note that the first 3 decimals coincide. The cubic root of 1329407 is about 109.9560981833.

The spelling of 1329407 in words is "one million, three hundred twenty-nine thousand, four hundred seven".