1349987709 has 16 divisors (see below), whose sum is σ = 2104965632. Its totient is φ = 753481008.

The previous prime is 1349987701. The next prime is 1349987711. The reversal of 1349987709 is 9077899431.

It is not a de Polignac number, because 1349987709 - 2³ = 1349987701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1349987701) 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, 746599 + ... + 748404.

It is an arithmetic number, because the mean of its divisors is an integer number (131560352).

Almost surely, 2^1349987709 is an apocalyptic number.

It is an amenable number.

1349987709 is a deficient number, since it is larger than the sum of its proper divisors (754977923).

1349987709 is a wasteful number, since it uses less digits than its factorization.

1349987709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1495056.

The product of its (nonzero) digits is 3429216, while the sum is 57.

The square root of 1349987709 is about 36742.1788820424. The cubic root of 1349987709 is about 1105.2060954759.

The spelling of 1349987709 in words is "one billion, three hundred forty-nine million, nine hundred eighty-seven thousand, seven hundred nine".