401005987199 has 8 divisors (see below), whose sum is σ = 406602902640. Its totient is φ = 395443944000.

The previous prime is 401005987189. The next prime is 401005987231. The reversal of 401005987199 is 991789500104.

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 401005987199 - 2⁸ = 401005986943 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 401005987199.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401005987189) 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, 8694902 + ... + 8740899.

It is an arithmetic number, because the mean of its divisors is an integer number (50825362830).

Almost surely, 2^401005987199 is an apocalyptic number.

401005987199 is a deficient number, since it is larger than the sum of its proper divisors (5596915441).

401005987199 is a wasteful number, since it uses less digits than its factorization.

401005987199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17436121.

The product of its (nonzero) digits is 816480, while the sum is 53.

The spelling of 401005987199 in words is "four hundred one billion, five million, nine hundred eighty-seven thousand, one hundred ninety-nine".