399767448 has 64 divisors (see below), whose sum is σ = 1054944000. Its totient is φ = 125891712.

The previous prime is 399767399. The next prime is 399767453. The reversal of 399767448 is 844767993.

It is a hoax number, since the sum of its digits (57) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 199186 + ... + 201182.

It is an arithmetic number, because the mean of its divisors is an integer number (16483500).

Almost surely, 2^399767448 is an apocalyptic number.

399767448 is a gapful number since it is divisible by the number (38) 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 399767448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (527472000).

399767448 is an abundant number, since it is smaller than the sum of its proper divisors (655176552).

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

399767448 is a wasteful number, since it uses less digits than its factorization.

399767448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2464 (or 2460 counting only the distinct ones).

The product of its digits is 9144576, while the sum is 57.

The square root of 399767448 is about 19994.1853547475. The cubic root of 399767448 is about 736.6634838989.

The spelling of 399767448 in words is "three hundred ninety-nine million, seven hundred sixty-seven thousand, four hundred forty-eight".