401338990106 has 8 divisors (see below), whose sum is σ = 602011921140. Its totient is φ = 200668349728.

The previous prime is 401338990057. The next prime is 401338990237. The reversal of 401338990106 is 601099833104.

It can be written as a sum of positive squares in 2 ways, for example, as 401310847081 + 28143025 = 633491^2 + 5305^2 .

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

It is a super-3 number, since 3×401338990106³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32891 + ... + 896526.

Almost surely, 2^401338990106 is an apocalyptic number.

401338990106 is a deficient number, since it is larger than the sum of its proper divisors (200672931034).

401338990106 is a wasteful number, since it uses less digits than its factorization.

401338990106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1145328.

The product of its (nonzero) digits is 139968, while the sum is 44.

The spelling of 401338990106 in words is "four hundred one billion, three hundred thirty-eight million, nine hundred ninety thousand, one hundred six".