1351440404 has 12 divisors (see below), whose sum is σ = 2370980724. Its totient is φ = 674017344.

The previous prime is 1351440403. The next prime is 1351440407. The reversal of 1351440404 is 4040441531.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1059372304 + 292068100 = 32548^2 + 17090^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1351440403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 423929 + ... + 427104.

It is an arithmetic number, because the mean of its divisors is an integer number (197581727).

Almost surely, 2^1351440404 is an apocalyptic number.

It is an amenable number.

1351440404 is a deficient number, since it is larger than the sum of its proper divisors (1019540320).

1351440404 is a wasteful number, since it uses less digits than its factorization.

1351440404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851434 (or 851432 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 1351440404 is about 36761.9423317104. The cubic root of 1351440404 is about 1105.6023834841.

Adding to 1351440404 its reverse (4040441531), we get a palindrome (5391881935).

The spelling of 1351440404 in words is "one billion, three hundred fifty-one million, four hundred forty thousand, four hundred four".