40029 has 8 divisors (see below), whose sum is σ = 58272. Its totient is φ = 24240.
The previous prime is 40013. The next prime is 40031. The reversal of 40029 is 92004.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 40029 - 24 = 40013 is a prime.
40029 is a lucky number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (40009) 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, 574 + ... + 639.
It is an arithmetic number, because the mean of its divisors is an integer number (7284).
240029 is an apocalyptic number.
It is an amenable number.
40029 is a deficient number, since it is larger than the sum of its proper divisors (18243).
40029 is a wasteful number, since it uses less digits than its factorization.
40029 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1227.
The product of its (nonzero) digits is 72, while the sum is 15.
The square root of 40029 is about 200.0724868641. The cubic root of 40029 is about 34.2077818207.
The spelling of 40029 in words is "forty thousand, twenty-nine".
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