1340147408 has 20 divisors (see below), whose sum is σ = 2602716228. Its totient is φ = 668478720.

The previous prime is 1340147377. The next prime is 1340147461. The reversal of 1340147408 is 8047410431.

It can be written as a sum of positive squares in 2 ways, for example, as 560174224 + 779973184 = 23668^2 + 27928^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92741 + ... + 106212.

Almost surely, 2^1340147408 is an apocalyptic number.

It is an amenable number.

1340147408 is a deficient number, since it is larger than the sum of its proper divisors (1262568820).

1340147408 is a wasteful number, since it uses less digits than its factorization.

1340147408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199382 (or 199376 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 1340147408 is about 36608.0238199223. The cubic root of 1340147408 is about 1102.5141961997.

Adding to 1340147408 its reverse (8047410431), we get a palindrome (9387557839).

The spelling of 1340147408 in words is "one billion, three hundred forty million, one hundred forty-seven thousand, four hundred eight".