400340040704 has 44 divisors (see below), whose sum is σ = 802401483000. Its totient is φ = 199641673728.

The previous prime is 400340040689. The next prime is 400340040757. The reversal of 400340040704 is 407040043004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127679 + ... + 903870.

Almost surely, 2^400340040704 is an apocalyptic number.

It is an amenable number.

400340040704 is an abundant number, since it is smaller than the sum of its proper divisors (402061442296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400340040704 is a wasteful number, since it uses less digits than its factorization.

400340040704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031948 (or 1031930 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 26.

Adding to 400340040704 its reverse (407040043004), we get a palindrome (807380083708).

The spelling of 400340040704 in words is "four hundred billion, three hundred forty million, forty thousand, seven hundred four".