1069747849 has 3 divisors (see below), whose sum is σ = 1069780557. Its totient is φ = 1069715142.

The previous prime is 1069747843. The next prime is 1069747867. The reversal of 1069747849 is 9487479601.

The square root of 1069747849 is 32707.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 1069747849 - 2⁵ = 1069747817 is a prime.

It is a super-2 number, since 2×1069747849² = 2288720920880253602, which contains 22 as substring.

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 1069747849.

It is not an unprimeable number, because it can be changed into a prime (1069747843) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 16354 + ... + 49060.

It is an arithmetic number, because the mean of its divisors is an integer number (356593519).

Almost surely, 2^1069747849 is an apocalyptic number.

1069747849 is the 32707-th square number.

1069747849 is the 16354-th centered octagonal number.

It is an amenable number.

1069747849 is a deficient number, since it is larger than the sum of its proper divisors (32708).

1069747849 is an frugal number, since it uses more digits than its factorization.

1069747849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65414 (or 32707 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 55.

The cubic root of 1069747849 is about 1022.7287720487.

The spelling of 1069747849 in words is "one billion, sixty-nine million, seven hundred forty-seven thousand, eight hundred forty-nine".