404003681401 has 4 divisors (see below), whose sum is σ = 405441417204. Its totient is φ = 402565945600.

The previous prime is 404003681381. The next prime is 404003681413. The reversal of 404003681401 is 104186300404.

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

It can be written as a sum of positive squares in 2 ways, for example, as 319845671401 + 84158010000 = 565549^2 + 290100^2 .

It is a cyclic number.

It is not a de Polignac number, because 404003681401 - 2¹³ = 404003673209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (404003681461) 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, 718867480 + ... + 718868041.

It is an arithmetic number, because the mean of its divisors is an integer number (101360354301).

Almost surely, 2^404003681401 is an apocalyptic number.

It is an amenable number.

404003681401 is a deficient number, since it is larger than the sum of its proper divisors (1437735803).

404003681401 is a wasteful number, since it uses less digits than its factorization.

404003681401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1437735802.

The product of its (nonzero) digits is 9216, while the sum is 31.

Adding to 404003681401 its reverse (104186300404), we get a palindrome (508189981805).

The spelling of 404003681401 in words is "four hundred four billion, three million, six hundred eighty-one thousand, four hundred one".