1340404404 has 48 divisors (see below), whose sum is σ = 3154092480. Its totient is φ = 443036160.

The previous prime is 1340404399. The next prime is 1340404409. The reversal of 1340404404 is 4044040431.

It is an interprime number because it is at equal distance from previous prime (1340404399) and next prime (1340404409).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340404409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 777087 + ... + 778809.

It is an arithmetic number, because the mean of its divisors is an integer number (65710260).

Almost surely, 2^1340404404 is an apocalyptic number.

It is an amenable number.

1340404404 is an abundant number, since it is smaller than the sum of its proper divisors (1813688076).

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

1340404404 is a wasteful number, since it uses less digits than its factorization.

1340404404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2240 (or 2238 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 1340404404 is about 36611.5337564544. The cubic root of 1340404404 is about 1102.5846669620.

Adding to 1340404404 its reverse (4044040431), we get a palindrome (5384444835).

The spelling of 1340404404 in words is "one billion, three hundred forty million, four hundred four thousand, four hundred four".