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400201 = 4143227
BaseRepresentation
bin1100001101101001001
3202022222021
41201231021
5100301301
612324441
73254524
oct1415511
9668867
10400201
1125374a
12173721
13110209
14a5bbb
157d8a1
hex61b49

400201 has 8 divisors (see below), whose sum is σ = 421344. Its totient is φ = 379680.

The previous prime is 400199. The next prime is 400207. The reversal of 400201 is 102004.

Adding to 400201 its reverse (102004), we get a palindrome (502205).

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

It is a cyclic number.

It is not a de Polignac number, because 400201 - 21 = 400199 is a prime.

It is a Duffinian number.

400201 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (400207) 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, 1650 + ... + 1876.

It is an arithmetic number, because the mean of its divisors is an integer number (52668).

2400201 is an apocalyptic number.

400201 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

400201 is a deficient number, since it is larger than the sum of its proper divisors (21143).

400201 is a wasteful number, since it uses less digits than its factorization.

400201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311.

The product of its (nonzero) digits is 8, while the sum is 7.

The square root of 400201 is about 632.6144165287. The cubic root of 400201 is about 73.6929694117.

The spelling of 400201 in words is "four hundred thousand, two hundred one", and thus it is an iban number.

Divisors: 1 41 43 227 1763 9307 9761 400201