399567060 has 96 divisors (see below), whose sum is σ = 1283251200. Its totient is φ = 103109760.

The previous prime is 399567043. The next prime is 399567061. The reversal of 399567060 is 60765993.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 399566997 and 399567015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399567061) 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, 4806 + ... + 28674.

It is an arithmetic number, because the mean of its divisors is an integer number (13367200).

Almost surely, 2^399567060 is an apocalyptic number.

399567060 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 399567060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (641625600).

399567060 is an abundant number, since it is smaller than the sum of its proper divisors (883684140).

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

399567060 is a wasteful number, since it uses less digits than its factorization.

399567060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23918 (or 23910 counting only the distinct ones).

The product of its (nonzero) digits is 306180, while the sum is 45.

The square root of 399567060 is about 19989.1735697102. The cubic root of 399567060 is about 736.5403763314.

The spelling of 399567060 in words is "three hundred ninety-nine million, five hundred sixty-seven thousand, sixty".