1329139 has 4 divisors (see below), whose sum is σ = 1519024. Its totient is φ = 1139256.

The previous prime is 1329131. The next prime is 1329143. The reversal of 1329139 is 9319231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1329139 - 2³ = 1329131 is a prime.

It is a super-2 number, since 2×1329139² = 3533220962642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1329131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94932 + ... + 94945.

It is an arithmetic number, because the mean of its divisors is an integer number (379756).

2^1329139 is an apocalyptic number.

1329139 is a deficient number, since it is larger than the sum of its proper divisors (189885).

1329139 is an equidigital number, since it uses as much as digits as its factorization.

1329139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189884.

The product of its digits is 1458, while the sum is 28.

The square root of 1329139 is about 1152.8829081915. The cubic root of 1329139 is about 109.9487088699.

The spelling of 1329139 in words is "one million, three hundred twenty-nine thousand, one hundred thirty-nine".