399682248 has 128 divisors (see below), whose sum is σ = 1188971520. Its totient is φ = 109589760.

The previous prime is 399682237. The next prime is 399682249. The reversal of 399682248 is 842286993.

It is a self number, because there is not a number n which added to its sum of digits gives 399682248.

It is not an unprimeable number, because it can be changed into a prime (399682249) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 440211 + ... + 441117.

It is an arithmetic number, because the mean of its divisors is an integer number (9288840).

Almost surely, 2^399682248 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 399682248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (594485760).

399682248 is an abundant number, since it is smaller than the sum of its proper divisors (789289272).

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

399682248 is a wasteful number, since it uses less digits than its factorization.

399682248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1027 (or 1023 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 51.

The square root of 399682248 is about 19992.0546217741. The cubic root of 399682248 is about 736.6111466476.

The spelling of 399682248 in words is "three hundred ninety-nine million, six hundred eighty-two thousand, two hundred forty-eight".