39970 has 16 divisors (see below), whose sum is σ = 82368. Its totient is φ = 13680.
The previous prime is 39953. The next prime is 39971. The reversal of 39970 is 7993.
It is not an unprimeable number, because it can be changed into a prime (39971) 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, 216 + ... + 355.
It is an arithmetic number, because the mean of its divisors is an integer number (5148).
239970 is an apocalyptic number.
39970 is an abundant number, since it is smaller than the sum of its proper divisors (42398).
It is a weird number, because it is abundant, but not a pseudoperfect number.
It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41184).
39970 is a wasteful number, since it uses less digits than its factorization.
39970 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 585.
The product of its (nonzero) digits is 1701, while the sum is 28.
The square root of 39970 is about 199.9249859322. The cubic root of 39970 is about 34.1909669154.
The spelling of 39970 in words is "thirty-nine thousand, nine hundred seventy".
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