400130044004 has 24 divisors (see below), whose sum is σ = 748758214008. Its totient is φ = 186432166400.

The previous prime is 400130043997. The next prime is 400130044007. The reversal of 400130044004 is 400440031004.

It can be written as a sum of positive squares in 4 ways, for example, as 176257228900 + 223872815104 = 419830^2 + 473152^2 .

It is a super-2 number, since 2×400130044004² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (400130044007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29123159 + ... + 29136894.

It is an arithmetic number, because the mean of its divisors is an integer number (31198258917).

Almost surely, 2^400130044004 is an apocalyptic number.

It is an amenable number.

400130044004 is a deficient number, since it is larger than the sum of its proper divisors (348628170004).

400130044004 is a wasteful number, since it uses less digits than its factorization.

400130044004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58260175 (or 58260173 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 400130044004 its reverse (400440031004), we get a palindrome (800570075008).

The spelling of 400130044004 in words is "four hundred billion, one hundred thirty million, forty-four thousand, four".