1069621849 has 4 divisors (see below), whose sum is σ = 1071855360. Its totient is φ = 1067388340.

The previous prime is 1069621841. The next prime is 1069621859. The reversal of 1069621849 is 9481269601.

It is a happy number.

1069621849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1069621849 - 2³ = 1069621841 is a prime.

It is a super-2 number, since 2×1069621849² = 2288181799716357602, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1069621799 and 1069621808.

It is not an unprimeable number, because it can be changed into a prime (1069621841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1116037 + ... + 1116994.

It is an arithmetic number, because the mean of its divisors is an integer number (267963840).

Almost surely, 2^1069621849 is an apocalyptic number.

It is an amenable number.

1069621849 is a deficient number, since it is larger than the sum of its proper divisors (2233511).

1069621849 is an equidigital number, since it uses as much as digits as its factorization.

1069621849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2233510.

The product of its (nonzero) digits is 186624, while the sum is 46.

The square root of 1069621849 is about 32705.0737501079. The cubic root of 1069621849 is about 1022.6886165158.

It can be divided in two parts, 106962 and 1849, that added together give a triangular number (108811 = T₄₆₆).

The spelling of 1069621849 in words is "one billion, sixty-nine million, six hundred twenty-one thousand, eight hundred forty-nine".