1353239969 has 4 divisors (see below), whose sum is σ = 1357140144. Its totient is φ = 1349339796.

The previous prime is 1353239959. The next prime is 1353239977. The reversal of 1353239969 is 9699323531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1353239969 is a prime.

It is a super-2 number, since 2×1353239969² = 3662516827398241922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1353239929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1949567 + ... + 1950260.

It is an arithmetic number, because the mean of its divisors is an integer number (339285036).

Almost surely, 2^1353239969 is an apocalyptic number.

It is an amenable number.

1353239969 is a deficient number, since it is larger than the sum of its proper divisors (3900175).

1353239969 is an equidigital number, since it uses as much as digits as its factorization.

1353239969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3900174.

The product of its digits is 1180980, while the sum is 50.

The square root of 1353239969 is about 36786.4101129751. The cubic root of 1353239969 is about 1106.0929023132.

The spelling of 1353239969 in words is "one billion, three hundred fifty-three million, two hundred thirty-nine thousand, nine hundred sixty-nine".