399282828 has 48 divisors (see below), whose sum is σ = 1066517760. Its totient is φ = 113891904.

The previous prime is 399282823. The next prime is 399282833. The reversal of 399282828 is 828282993.

It is an interprime number because it is at equal distance from previous prime (399282823) and next prime (399282833).

It is not an unprimeable number, because it can be changed into a prime (399282823) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51750 + ... + 58962.

It is an arithmetic number, because the mean of its divisors is an integer number (22219120).

Almost surely, 2^399282828 is an apocalyptic number.

It is an amenable number.

399282828 is an abundant number, since it is smaller than the sum of its proper divisors (667234932).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

399282828 is a wasteful number, since it uses less digits than its factorization.

399282828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7886 (or 7884 counting only the distinct ones).

The product of its digits is 995328, while the sum is 51.

The square root of 399282828 is about 19982.0626562925. The cubic root of 399282828 is about 736.3656889220.

The spelling of 399282828 in words is "three hundred ninety-nine million, two hundred eighty-two thousand, eight hundred twenty-eight".