1340754399 has 24 divisors (see below), whose sum is σ = 2058392960. Its totient is φ = 838559952.

The previous prime is 1340754397. The next prime is 1340754403. The reversal of 1340754399 is 9934570431.

1340754399 is a `hidden beast` number, since 13 + 4 + 0 + 7 + 543 + 99 = 666.

It is not a de Polignac number, because 1340754399 - 2¹ = 1340754397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340754397) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20449 + ... + 55674.

Almost surely, 2^1340754399 is an apocalyptic number.

1340754399 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1340754399 is a deficient number, since it is larger than the sum of its proper divisors (717638561).

1340754399 is a wasteful number, since it uses less digits than its factorization.

1340754399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76251 (or 76248 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 45.

The square root of 1340754399 is about 36616.3132906632. The cubic root of 1340754399 is about 1102.6806244548.

The spelling of 1340754399 in words is "one billion, three hundred forty million, seven hundred fifty-four thousand, three hundred ninety-nine".