399450700 has 144 divisors (see below), whose sum is σ = 1027621728. Its totient is φ = 133120000.

The previous prime is 399450691. The next prime is 399450703. The reversal of 399450700 is 7054993.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 399450700.

It is not an unprimeable number, because it can be changed into a prime (399450703) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 766440 + ... + 766960.

It is an arithmetic number, because the mean of its divisors is an integer number (7136262).

Almost surely, 2^399450700 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 399450700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (513810864).

399450700 is an abundant number, since it is smaller than the sum of its proper divisors (628171028).

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

399450700 is a wasteful number, since it uses less digits than its factorization.

399450700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604 (or 597 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 399450700 is about 19986.2627822212. The cubic root of 399450700 is about 736.4688721397.

The spelling of 399450700 in words is "three hundred ninety-nine million, four hundred fifty thousand, seven hundred".