399296224799 has 4 divisors (see below), whose sum is σ = 401009942736. Its totient is φ = 397582506864.

The previous prime is 399296224793. The next prime is 399296224807. The reversal of 399296224799 is 997422692993.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 399296224799 - 2⁸ = 399296224543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399296224793) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 856858619 + ... + 856859084.

It is an arithmetic number, because the mean of its divisors is an integer number (100252485684).

Almost surely, 2^399296224799 is an apocalyptic number.

399296224799 is a deficient number, since it is larger than the sum of its proper divisors (1713717937).

399296224799 is a wasteful number, since it uses less digits than its factorization.

399296224799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1713717936.

The product of its digits is 238085568, while the sum is 71.

The spelling of 399296224799 in words is "three hundred ninety-nine billion, two hundred ninety-six million, two hundred twenty-four thousand, seven hundred ninety-nine".