399476827 has 8 divisors (see below), whose sum is σ = 424422000. Its totient is φ = 375276384.

The previous prime is 399476813. The next prime is 399476839. The reversal of 399476827 is 728674993.

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 399476827 - 2⁷ = 399476699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (399476867) 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, 185077 + ... + 187222.

It is an arithmetic number, because the mean of its divisors is an integer number (53052750).

Almost surely, 2^399476827 is an apocalyptic number.

399476827 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

399476827 is a deficient number, since it is larger than the sum of its proper divisors (24945173).

399476827 is a wasteful number, since it uses less digits than its factorization.

399476827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372365.

The product of its digits is 4572288, while the sum is 55.

The square root of 399476827 is about 19986.9163954823. The cubic root of 399476827 is about 736.4849286082.

The spelling of 399476827 in words is "three hundred ninety-nine million, four hundred seventy-six thousand, eight hundred twenty-seven".