1009455 has 16 divisors (see below), whose sum is σ = 1628640. Its totient is φ = 533888.

The previous prime is 1009439. The next prime is 1009457. The reversal of 1009455 is 5549001.

It is a cyclic number.

It is not a de Polignac number, because 1009455 - 2⁴ = 1009439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1009457) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2401 + ... + 2789.

It is an arithmetic number, because the mean of its divisors is an integer number (101790).

2^1009455 is an apocalyptic number.

1009455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1009455 is a deficient number, since it is larger than the sum of its proper divisors (619185).

1009455 is a wasteful number, since it uses less digits than its factorization.

1009455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 1009455 is about 1004.7163778898. The cubic root of 1009455 is about 100.3141785513.

The spelling of 1009455 in words is "one million, nine thousand, four hundred fifty-five".