1404400500 has 72 divisors (see below), whose sum is σ = 4430429640. Its totient is φ = 374505600.

The previous prime is 1404400489. The next prime is 1404400507. The reversal of 1404400500 is 50044041.

It can be written as a sum of positive squares in 4 ways, for example, as 237221604 + 1167178896 = 15402^2 + 34164^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1404400507) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 151545 + ... + 160544.

It is an arithmetic number, because the mean of its divisors is an integer number (61533745).

Almost surely, 2^1404400500 is an apocalyptic number.

1404400500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1404400500 is an abundant number, since it is smaller than the sum of its proper divisors (3026029140).

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

1404400500 is a wasteful number, since it uses less digits than its factorization.

1404400500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312114 (or 312099 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 1404400500 is about 37475.3318864557. The cubic root of 1404400500 is about 1119.8598091962.

Adding to 1404400500 its reverse (50044041), we get a palindrome (1454444541).

The spelling of 1404400500 in words is "one billion, four hundred four million, four hundred thousand, five hundred".