399450271 has 8 divisors (see below), whose sum is σ = 436282704. Its totient is φ = 362704320.

The previous prime is 399450257. The next prime is 399450299. The reversal of 399450271 is 172054993.

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

It is not a de Polignac number, because 399450271 - 2¹¹ = 399448223 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399450871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11760 + ... + 30613.

It is an arithmetic number, because the mean of its divisors is an integer number (54535338).

Almost surely, 2^399450271 is an apocalyptic number.

399450271 is a deficient number, since it is larger than the sum of its proper divisors (36832433).

399450271 is a wasteful number, since it uses less digits than its factorization.

399450271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43241.

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 399450271 is about 19986.2520498467. The cubic root of 399450271 is about 736.4686084900.

The spelling of 399450271 in words is "three hundred ninety-nine million, four hundred fifty thousand, two hundred seventy-one".