403640400404 has 6 divisors (see below), whose sum is σ = 706370700714. Its totient is φ = 201820200200.

The previous prime is 403640400391. The next prime is 403640400409. The reversal of 403640400404 is 404004046304.

It can be written as a sum of positive squares in only one way, i.e., 286334150404 + 117306250000 = 535102^2 + 342500^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403640400409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50455050047 + ... + 50455050054.

It is an arithmetic number, because the mean of its divisors is an integer number (117728450119).

Almost surely, 2^403640400404 is an apocalyptic number.

It is an amenable number.

403640400404 is a deficient number, since it is larger than the sum of its proper divisors (302730300310).

403640400404 is a wasteful number, since it uses less digits than its factorization.

403640400404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100910100105 (or 100910100103 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 403640400404 its reverse (404004046304), we get a palindrome (807644446708).

The spelling of 403640400404 in words is "four hundred three billion, six hundred forty million, four hundred thousand, four hundred four".