1340597699 has 8 divisors (see below), whose sum is σ = 1533808128. Its totient is φ = 1147811400.

The previous prime is 1340597659. The next prime is 1340597701. The reversal of 1340597699 is 9967950431.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1340597699 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1340597699.

It is not an unprimeable number, because it can be changed into a prime (1340597659) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99227 + ... + 111924.

It is an arithmetic number, because the mean of its divisors is an integer number (191726016).

Almost surely, 2^1340597699 is an apocalyptic number.

1340597699 is a deficient number, since it is larger than the sum of its proper divisors (193210429).

1340597699 is an equidigital number, since it uses as much as digits as its factorization.

1340597699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212065.

The product of its (nonzero) digits is 1837080, while the sum is 53.

The square root of 1340597699 is about 36614.1734714851. The cubic root of 1340597699 is about 1102.6376643656.

The spelling of 1340597699 in words is "one billion, three hundred forty million, five hundred ninety-seven thousand, six hundred ninety-nine".