403440068 has 6 divisors (see below), whose sum is σ = 706020126. Its totient is φ = 201720032.

The previous prime is 403440067. The next prime is 403440077. The reversal of 403440068 is 860044304.

It can be written as a sum of positive squares in only one way, i.e., 301994884 + 101445184 = 17378^2 + 10072^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 403440068.

It is not an unprimeable number, because it can be changed into a prime (403440067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50430005 + ... + 50430012.

It is an arithmetic number, because the mean of its divisors is an integer number (117670021).

Almost surely, 2^403440068 is an apocalyptic number.

It is an amenable number.

403440068 is a deficient number, since it is larger than the sum of its proper divisors (302580058).

403440068 is a wasteful number, since it uses less digits than its factorization.

403440068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100860021 (or 100860019 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 403440068 is about 20085.8175835588. The cubic root of 403440068 is about 738.9124931557.

The spelling of 403440068 in words is "four hundred three million, four hundred forty thousand, sixty-eight".