399773471 has 8 divisors (see below), whose sum is σ = 422812800. Its totient is φ = 376934040.

The previous prime is 399773449. The next prime is 399773503. The reversal of 399773471 is 174377993.

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

It is a cyclic number.

It is not a de Polignac number, because 399773471 - 2¹⁰ = 399772447 is a prime.

It is a super-3 number, since 3×399773471³ (a number of 27 digits) contains 333 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 (399773431) 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, 45851 + ... + 53868.

It is an arithmetic number, because the mean of its divisors is an integer number (52851600).

Almost surely, 2^399773471 is an apocalyptic number.

399773471 is a deficient number, since it is larger than the sum of its proper divisors (23039329).

399773471 is a wasteful number, since it uses less digits than its factorization.

399773471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99949.

The product of its digits is 1000188, while the sum is 50.

The square root of 399773471 is about 19994.3359729699. The cubic root of 399773471 is about 736.6671834680.

The spelling of 399773471 in words is "three hundred ninety-nine million, seven hundred seventy-three thousand, four hundred seventy-one".