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400049 = 1330773
BaseRepresentation
bin1100001101010110001
3202022202122
41201222301
5100300144
612324025
73254216
oct1415261
9668678
10400049
11253621
12173615
13110120
14a5b0d
157d7ee
hex61ab1

400049 has 4 divisors (see below), whose sum is σ = 430836. Its totient is φ = 369264.

The previous prime is 400033. The next prime is 400051. The reversal of 400049 is 940004.

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 48400 + 351649 = 220^2 + 593^2 .

It is a cyclic number.

It is not a de Polignac number, because 400049 - 24 = 400033 is a prime.

It is a magnanimous number.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 400049.

It is not an unprimeable number, because it can be changed into a prime (400009) 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, 15374 + ... + 15399.

It is an arithmetic number, because the mean of its divisors is an integer number (107709).

2400049 is an apocalyptic number.

It is an amenable number.

400049 is a deficient number, since it is larger than the sum of its proper divisors (30787).

400049 is a wasteful number, since it uses less digits than its factorization.

400049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30786.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 400049 is about 632.4942687487. The cubic root of 400049 is about 73.6836384757.

The spelling of 400049 in words is "four hundred thousand, forty-nine".

Divisors: 1 13 30773 400049