39860081 has 16 divisors (see below), whose sum is σ = 44634240. Its totient is φ = 35418240.

The previous prime is 39860071. The next prime is 39860083. The reversal of 39860081 is 18006893.

It is a cyclic number.

It is not a de Polignac number, because 39860081 - 2¹⁸ = 39597937 is a prime.

It is a super-2 number, since 2×39860081² = 3177652114653122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39860083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22301 + ... + 24021.

It is an arithmetic number, because the mean of its divisors is an integer number (2789640).

Almost surely, 2^39860081 is an apocalyptic number.

It is an amenable number.

39860081 is a deficient number, since it is larger than the sum of its proper divisors (4774159).

39860081 is a wasteful number, since it uses less digits than its factorization.

39860081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1816.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 39860081 is about 6313.4840619107. The cubic root of 39860081 is about 341.5959599339.

The spelling of 39860081 in words is "thirty-nine million, eight hundred sixty thousand, eighty-one".