399327269 has 4 divisors (see below), whose sum is σ = 435629760. Its totient is φ = 363024780.

The previous prime is 399327251. The next prime is 399327293. The reversal of 399327269 is 962723993.

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-399327269 is a prime.

It is a super-2 number, since 2×399327269² = 318924535533996722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399327209) 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, 18151229 + ... + 18151250.

It is an arithmetic number, because the mean of its divisors is an integer number (108907440).

Almost surely, 2^399327269 is an apocalyptic number.

It is an amenable number.

399327269 is a deficient number, since it is larger than the sum of its proper divisors (36302491).

399327269 is a wasteful number, since it uses less digits than its factorization.

399327269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36302490.

The product of its digits is 1102248, while the sum is 50.

The square root of 399327269 is about 19983.1746476880. The cubic root of 399327269 is about 736.3930075804.

The spelling of 399327269 in words is "three hundred ninety-nine million, three hundred twenty-seven thousand, two hundred sixty-nine".