1000455409 has 2 divisors, whose sum is σ = 1000455410. Its totient is φ = 1000455408.

The previous prime is 1000455397. The next prime is 1000455433. The reversal of 1000455409 is 9045540001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 775455409 + 225000000 = 27847^2 + 15000^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000455409 - 2²⁹ = 463584497 is a prime.

It is a super-2 number, since 2×1000455409² = 2001822050794714562, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1000455809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500227704 + 500227705.

It is an arithmetic number, because the mean of its divisors is an integer number (500227705).

Almost surely, 2^1000455409 is an apocalyptic number.

It is an amenable number.

1000455409 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000455409 is an equidigital number, since it uses as much as digits as its factorization.

1000455409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 1000455409 is about 31629.9764305951. The cubic root of 1000455409 is about 1000.1517799617.

The spelling of 1000455409 in words is "one billion, four hundred fifty-five thousand, four hundred nine".