1404430040 has 128 divisors (see below), whose sum is σ = 3502699200. Its totient is φ = 503592960.

The previous prime is 1404430037. The next prime is 1404430121. The reversal of 1404430040 is 400344041.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1404429994 and 1404430021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3610166 + ... + 3610554.

Almost surely, 2^1404430040 is an apocalyptic number.

1404430040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1404430040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1751349600).

1404430040 is an abundant number, since it is smaller than the sum of its proper divisors (2098269160).

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

1404430040 is a wasteful number, since it uses less digits than its factorization.

1404430040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597 (or 593 counting only the distinct ones).

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

The square root of 1404430040 is about 37475.7260103123. The cubic root of 1404430040 is about 1119.8676608090.

Adding to 1404430040 its reverse (400344041), we get a palindrome (1804774081).

The spelling of 1404430040 in words is "one billion, four hundred four million, four hundred thirty thousand, forty".