399467722 has 8 divisors (see below), whose sum is σ = 599304672. Its totient is φ = 199699500.

The previous prime is 399467713. The next prime is 399467741. The reversal of 399467722 is 227764993.

It is a happy number.

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1347 + ... + 28297.

It is an arithmetic number, because the mean of its divisors is an integer number (74913084).

Almost surely, 2^399467722 is an apocalyptic number.

399467722 is a deficient number, since it is larger than the sum of its proper divisors (199836950).

399467722 is a wasteful number, since it uses less digits than its factorization.

399467722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34364.

The product of its digits is 1143072, while the sum is 49.

The square root of 399467722 is about 19986.6886201792. The cubic root of 399467722 is about 736.4793331679.

The spelling of 399467722 in words is "three hundred ninety-nine million, four hundred sixty-seven thousand, seven hundred twenty-two".