1329955 has 8 divisors (see below), whose sum is σ = 1741104. Its totient is φ = 967200.

The previous prime is 1329953. The next prime is 1329971. The reversal of 1329955 is 5599231.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1329955 - 2¹ = 1329953 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1329955.

It is not an unprimeable number, because it can be changed into a prime (1329953) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12036 + ... + 12145.

It is an arithmetic number, because the mean of its divisors is an integer number (217638).

2^1329955 is an apocalyptic number.

1329955 is a deficient number, since it is larger than the sum of its proper divisors (411149).

1329955 is a wasteful number, since it uses less digits than its factorization.

1329955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24197.

The product of its digits is 12150, while the sum is 34.

The square root of 1329955 is about 1153.2367493277. The cubic root of 1329955 is about 109.9712045839.

It can be divided in two parts, 13299 and 55, that multiplied together give a triangular number (731445 = T₁₂₀₉).

The spelling of 1329955 in words is "one million, three hundred twenty-nine thousand, nine hundred fifty-five".