1349866897 has 8 divisors (see below), whose sum is σ = 1358171496. Its totient is φ = 1341576192.

The previous prime is 1349866877. The next prime is 1349866933. The reversal of 1349866897 is 7986689431.

It can be written as a sum of positive squares in 4 ways, for example, as 581967376 + 767899521 = 24124^2 + 27711^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1349866897 - 2¹⁹ = 1349342609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1349866867) 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, 243723 + ... + 249199.

It is an arithmetic number, because the mean of its divisors is an integer number (169771437).

Almost surely, 2^1349866897 is an apocalyptic number.

It is an amenable number.

1349866897 is a deficient number, since it is larger than the sum of its proper divisors (8304599).

1349866897 is a wasteful number, since it uses less digits than its factorization.

1349866897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6947.

The product of its digits is 15676416, while the sum is 61.

The square root of 1349866897 is about 36740.5347946924. The cubic root of 1349866897 is about 1105.1731257580.

The spelling of 1349866897 in words is "one billion, three hundred forty-nine million, eight hundred sixty-six thousand, eight hundred ninety-seven".