1009355 has 16 divisors (see below), whose sum is σ = 1292544. Its totient is φ = 755040.

The previous prime is 1009343. The next prime is 1009357. The reversal of 1009355 is 5539001.

1009355 = T₁₃₉ + T₁₄₀ + ... + T₂₀₅.

It is not a de Polignac number, because 1009355 - 2⁶ = 1009291 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

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 1009355.

It is not an unprimeable number, because it can be changed into a prime (1009357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7640 + ... + 7770.

It is an arithmetic number, because the mean of its divisors is an integer number (80784).

2^1009355 is an apocalyptic number.

1009355 is a deficient number, since it is larger than the sum of its proper divisors (283189).

1009355 is a wasteful number, since it uses less digits than its factorization.

1009355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226.

The product of its (nonzero) digits is 675, while the sum is 23.

The square root of 1009355 is about 1004.6666113692. Note that the first 4 decimals coincide. The cubic root of 1009355 is about 100.3108659555.

The spelling of 1009355 in words is "one million, nine thousand, three hundred fifty-five".