399474180 has 120 divisors (see below), whose sum is σ = 1432229568. Its totient is φ = 91305792.

The previous prime is 399474169. The next prime is 399474247. The reversal of 399474180 is 81474993.

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

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 6274 + ... + 28953.

Almost surely, 2^399474180 is an apocalyptic number.

399474180 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 399474180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (716114784).

399474180 is an abundant number, since it is smaller than the sum of its proper divisors (1032755388).

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

399474180 is a wasteful number, since it uses less digits than its factorization.

399474180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35255 (or 35244 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 399474180 is about 19986.8501770539. The cubic root of 399474180 is about 736.4833019140.

The spelling of 399474180 in words is "three hundred ninety-nine million, four hundred seventy-four thousand, one hundred eighty".