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BaseRepresentation
bin1001110111010110
32001102112
421313112
52243111
6511022
7225542
oct116726
961375
1040406
11283a3
121b472
1315512
1410a22
15be8b
hex9dd6

40406 has 8 divisors (see below), whose sum is σ = 61560. Its totient is φ = 19888.

The previous prime is 40387. The next prime is 40423. The reversal of 40406 is 60404.

40406 = 992 + 1002 + ... + 1022.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65 + ... + 291.

It is an arithmetic number, because the mean of its divisors is an integer number (7695).

240406 is an apocalyptic number.

40406 is a deficient number, since it is larger than the sum of its proper divisors (21154).

40406 is a wasteful number, since it uses less digits than its factorization.

40406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 40406 is about 201.0124374261. The cubic root of 40406 is about 34.3148380186.

The spelling of 40406 in words is "forty thousand, four hundred six".

Divisors: 1 2 89 178 227 454 20203 40406