399848993 has 8 divisors (see below), whose sum is σ = 424654560. Its totient is φ = 375186240.

The previous prime is 399848983. The next prime is 399849007.

399848993 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is not a de Polignac number, because 399848993 - 2²⁰ = 398800417 is a prime.

It is a super-2 number, since 2×399848993² = 319758434406228098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (399848963) 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, 29903 + ... + 41156.

It is an arithmetic number, because the mean of its divisors is an integer number (53081820).

Almost surely, 2^399848993 is an apocalyptic number.

It is an amenable number.

399848993 is a deficient number, since it is larger than the sum of its proper divisors (24805567).

399848993 is a wasteful number, since it uses less digits than its factorization.

399848993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71407.

The product of its digits is 15116544, while the sum is 62.

The square root of 399848993 is about 19996.2244686341. The cubic root of 399848993 is about 736.7135689672.

The spelling of 399848993 in words is "three hundred ninety-nine million, eight hundred forty-eight thousand, nine hundred ninety-three".