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1409009 = 7201287
BaseRepresentation
bin101010111111111110001
32122120210112
411113333301
5330042014
650111105
714655620
oct5277761
92576715
101409009
11882678
1257b495
133a4444
142896b7
151cc73e
hex157ff1

1409009 has 4 divisors (see below), whose sum is σ = 1610304. Its totient is φ = 1207716.

The previous prime is 1408999. The next prime is 1409017. The reversal of 1409009 is 9009041.

1409009 is nontrivially palindromic in base 6.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1409009 - 24 = 1408993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1409069) 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, 100637 + ... + 100650.

It is an arithmetic number, because the mean of its divisors is an integer number (402576).

21409009 is an apocalyptic number.

It is an amenable number.

1409009 is a deficient number, since it is larger than the sum of its proper divisors (201295).

1409009 is an equidigital number, since it uses as much as digits as its factorization.

1409009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201294.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 1409009 is about 1187.0168490801. The cubic root of 1409009 is about 112.1083401069.

The spelling of 1409009 in words is "one million, four hundred nine thousand, nine".

Divisors: 1 7 201287 1409009