399727727993 has 8 divisors (see below), whose sum is σ = 436084905216. Its totient is φ = 363373599600.

The previous prime is 399727727899. The next prime is 399727728007.

399727727993 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-399727727993 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 399727727993.

It is not an unprimeable number, because it can be changed into a prime (399727777993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 483638 + ... + 1016543.

It is an arithmetic number, because the mean of its divisors is an integer number (54510613152).

Almost surely, 2^399727727993 is an apocalyptic number.

It is an amenable number.

399727727993 is a deficient number, since it is larger than the sum of its proper divisors (36357177223).

399727727993 is a wasteful number, since it uses less digits than its factorization.

399727727993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1524415.

The product of its digits is 567106596, while the sum is 74.

The spelling of 399727727993 in words is "three hundred ninety-nine billion, seven hundred twenty-seven million, seven hundred twenty-seven thousand, nine hundred ninety-three".