1453409 has 4 divisors (see below), whose sum is σ = 1488900. Its totient is φ = 1417920.

The previous prime is 1453399. The next prime is 1453411. The reversal of 1453409 is 9043541.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 250000 + 1203409 = 500^2 + 1097^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1453409 is a prime.

It is a super-2 number, since 2×1453409² = 4224795442562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1453429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17684 + ... + 17765.

It is an arithmetic number, because the mean of its divisors is an integer number (372225).

2^1453409 is an apocalyptic number.

It is an amenable number.

1453409 is a deficient number, since it is larger than the sum of its proper divisors (35491).

1453409 is an equidigital number, since it uses as much as digits as its factorization.

1453409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35490.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 1453409 is about 1205.5741370816. The cubic root of 1453409 is about 113.2737508805.

The spelling of 1453409 in words is "one million, four hundred fifty-three thousand, four hundred nine".