1253409 has 8 divisors (see below), whose sum is σ = 1728960. Its totient is φ = 806736.

The previous prime is 1253401. The next prime is 1253437. The reversal of 1253409 is 9043521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1253409 - 2³ = 1253401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1253401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7117 + ... + 7290.

It is an arithmetic number, because the mean of its divisors is an integer number (216120).

2^1253409 is an apocalyptic number.

It is an amenable number.

1253409 is a deficient number, since it is larger than the sum of its proper divisors (475551).

1253409 is a wasteful number, since it uses less digits than its factorization.

1253409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14439.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 1253409 is about 1119.5575018729. The cubic root of 1253409 is about 107.8195718529.

The spelling of 1253409 in words is "one million, two hundred fifty-three thousand, four hundred nine".