400471 has 2 divisors, whose sum is σ = 400472. Its totient is φ = 400470.
The previous prime is 400457. The next prime is 400481. The reversal of 400471 is 174004.
It is a happy number.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 400471 - 211 = 398423 is a prime.
It is a super-3 number, since 3×4004713 = 192679038941061333, which contains 333 as substring.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (400441) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200235 + 200236.
It is an arithmetic number, because the mean of its divisors is an integer number (200236).
2400471 is an apocalyptic number.
400471 is a deficient number, since it is larger than the sum of its proper divisors (1).
400471 is an equidigital number, since it uses as much as digits as its factorization.
400471 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 112, while the sum is 16.
The square root of 400471 is about 632.8277806797. The cubic root of 400471 is about 73.7095382765.
Adding to 400471 its reverse (174004), we get a palindrome (574475).
The spelling of 400471 in words is "four hundred thousand, four hundred seventy-one", and thus it is an iban number.
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