1069905445 has 12 divisors (see below), whose sum is σ = 1493501004. Its totient is φ = 733649280.

The previous prime is 1069905433. The next prime is 1069905479. The reversal of 1069905445 is 5445099601.

It can be written as a sum of positive squares in 2 ways, for example, as 513747556 + 556157889 = 22666^2 + 23583^2 .

It is not a de Polignac number, because 1069905445 - 2¹⁷ = 1069774373 is a prime.

It is a super-2 number, since 2×1069905445² = 2289395322481296050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2183236 + ... + 2183725.

It is an arithmetic number, because the mean of its divisors is an integer number (124458417).

Almost surely, 2^1069905445 is an apocalyptic number.

It is an amenable number.

1069905445 is a deficient number, since it is larger than the sum of its proper divisors (423595559).

1069905445 is an equidigital number, since it uses as much as digits as its factorization.

1069905445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4366980 (or 4366973 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 43.

The square root of 1069905445 is about 32709.4091203128. The cubic root of 1069905445 is about 1022.7789926216.

The spelling of 1069905445 in words is "one billion, sixty-nine million, nine hundred five thousand, four hundred forty-five".