945409 has 2 divisors, whose sum is σ = 945410. Its totient is φ = 945408.

The previous prime is 945397. The next prime is 945431. The reversal of 945409 is 904549.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 944784 + 625 = 972^2 + 25^2 .

It is a cyclic number.

It is not a de Polignac number, because 945409 - 2⁵ = 945377 is a prime.

It is not a weakly prime, because it can be changed into another prime (945479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 472704 + 472705.

It is an arithmetic number, because the mean of its divisors is an integer number (472705).

2⁹⁴⁵⁴⁰⁹ is an apocalyptic number.

It is an amenable number.

945409 is a deficient number, since it is larger than the sum of its proper divisors (1).

945409 is an equidigital number, since it uses as much as digits as its factorization.

945409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 945409 is about 972.3214489046. The cubic root of 945409 is about 98.1461445771.

It can be divided in two parts, 94540 and 9, that multiplied together give a triangular number (850860 = T₁₃₀₄).

The spelling of 945409 in words is "nine hundred forty-five thousand, four hundred nine".