399882851 has 2 divisors, whose sum is σ = 399882852. Its totient is φ = 399882850.

The previous prime is 399882839. The next prime is 399882883. The reversal of 399882851 is 158288993.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 399882851 - 2⁶ = 399882787 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 399882793 and 399882802.

It is not a weakly prime, because it can be changed into another prime (399885851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199941425 + 199941426.

It is an arithmetic number, because the mean of its divisors is an integer number (199941426).

Almost surely, 2^399882851 is an apocalyptic number.

399882851 is a deficient number, since it is larger than the sum of its proper divisors (1).

399882851 is an equidigital number, since it uses as much as digits as its factorization.

399882851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1244160, while the sum is 53.

The square root of 399882851 is about 19997.0710605328. The cubic root of 399882851 is about 736.7343626038.

The spelling of 399882851 in words is "three hundred ninety-nine million, eight hundred eighty-two thousand, eight hundred fifty-one".