1340444402 has 16 divisors (see below), whose sum is σ = 2264212224. Its totient is φ = 589638000.

The previous prime is 1340444383. The next prime is 1340444419. The reversal of 1340444402 is 2044440431.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 982049 + ... + 983412.

It is an arithmetic number, because the mean of its divisors is an integer number (141513264).

Almost surely, 2^1340444402 is an apocalyptic number.

1340444402 is a deficient number, since it is larger than the sum of its proper divisors (923767822).

1340444402 is a wasteful number, since it uses less digits than its factorization.

1340444402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1965505.

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 1340444402 is about 36612.0800010051. The cubic root of 1340444402 is about 1102.5956339863.

Adding to 1340444402 its reverse (2044440431), we get a palindrome (3384884833).

The spelling of 1340444402 in words is "one billion, three hundred forty million, four hundred forty-four thousand, four hundred two".