400004104 has 8 divisors (see below), whose sum is σ = 750007710. Its totient is φ = 200002048.

The previous prime is 400004083. The next prime is 400004107. The reversal of 400004104 is 401400004.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 399920004 + 84100 = 19998^2 + 290^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (400004107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25000249 + ... + 25000264.

Almost surely, 2^400004104 is an apocalyptic number.

It is an amenable number.

400004104 is a deficient number, since it is larger than the sum of its proper divisors (350003606).

400004104 is a wasteful number, since it uses less digits than its factorization.

400004104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50000519 (or 50000515 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 400004104 is about 20000.1025997368. The cubic root of 400004104 is about 736.8088195970.

Adding to 400004104 its reverse (401400004), we get a palindrome (801404108).

The spelling of 400004104 in words is "four hundred million, four thousand, one hundred four".