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1408091 = 2815011
BaseRepresentation
bin101010111110001011011
32122112112112
411113301123
5330024331
650102535
714653136
oct5276133
92575475
101408091
11881a13
1257aa4b
133a3bb9
1428921d
151cc32b
hex157c5b

1408091 has 4 divisors (see below), whose sum is σ = 1413384. Its totient is φ = 1402800.

The previous prime is 1408087. The next prime is 1408111. The reversal of 1408091 is 1908041.

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

It is a cyclic number.

It is not a de Polignac number, because 1408091 - 22 = 1408087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1408021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2225 + ... + 2786.

It is an arithmetic number, because the mean of its divisors is an integer number (353346).

21408091 is an apocalyptic number.

1408091 is a deficient number, since it is larger than the sum of its proper divisors (5293).

1408091 is an equidigital number, since it uses as much as digits as its factorization.

1408091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5292.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 1408091 is about 1186.6301024329. The cubic root of 1408091 is about 112.0839878104.

The spelling of 1408091 in words is "one million, four hundred eight thousand, ninety-one".

Divisors: 1 281 5011 1408091