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1102009 = 4723447
BaseRepresentation
bin100001101000010111001
32001222200011
410031002321
5240231014
635341521
712236566
oct4150271
92058604
101102009
11692a57
124518a1
132c779c
1420986d
1516b7c4
hex10d0b9

1102009 has 4 divisors (see below), whose sum is σ = 1125504. Its totient is φ = 1078516.

The previous prime is 1102007. The next prime is 1102021. The reversal of 1102009 is 9002011.

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 1102009 - 21 = 1102007 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1102009.

It is not an unprimeable number, because it can be changed into a prime (1102001) 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, 11677 + ... + 11770.

It is an arithmetic number, because the mean of its divisors is an integer number (281376).

21102009 is an apocalyptic number.

It is an amenable number.

1102009 is a deficient number, since it is larger than the sum of its proper divisors (23495).

1102009 is an equidigital number, since it uses as much as digits as its factorization.

1102009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23494.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1102009 is about 1049.7661644385. The cubic root of 1102009 is about 103.2908172879.

The spelling of 1102009 in words is "one million, one hundred two thousand, nine".

Divisors: 1 47 23447 1102009