1440131404 has 48 divisors (see below), whose sum is σ = 2756654208. Its totient is φ = 655619328.

The previous prime is 1440131393. The next prime is 1440131417. The reversal of 1440131404 is 4041310441.

It is a super-2 number, since 2×1440131404² = 4147956921574022432, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 310567 + ... + 315169.

It is an arithmetic number, because the mean of its divisors is an integer number (57430296).

Almost surely, 2^1440131404 is an apocalyptic number.

It is an amenable number.

1440131404 is a deficient number, since it is larger than the sum of its proper divisors (1316522804).

1440131404 is a wasteful number, since it uses less digits than its factorization.

1440131404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4774 (or 4772 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 1440131404 is about 37949.0632822472. The cubic root of 1440131404 is about 1129.2775824731.

Adding to 1440131404 its reverse (4041310441), we get a palindrome (5481441845).

The spelling of 1440131404 in words is "one billion, four hundred forty million, one hundred thirty-one thousand, four hundred four".