39660481 has 4 divisors (see below), whose sum is σ = 45326272. Its totient is φ = 33994692.

The previous prime is 39660463. The next prime is 39660503. The reversal of 39660481 is 18406693.

39660481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18406693 = 23 ⋅800291.

It is a cyclic number.

It is not a de Polignac number, because 39660481 - 2¹⁷ = 39529409 is a prime.

It is a super-2 number, since 2×39660481² = 3145907506302722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 39660481.

It is not an unprimeable number, because it can be changed into a prime (39660421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2832885 + ... + 2832898.

It is an arithmetic number, because the mean of its divisors is an integer number (11331568).

Almost surely, 2^39660481 is an apocalyptic number.

It is an amenable number.

39660481 is a deficient number, since it is larger than the sum of its proper divisors (5665791).

39660481 is an equidigital number, since it uses as much as digits as its factorization.

39660481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5665790.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 39660481 is about 6297.6567864564. The cubic root of 39660481 is about 341.0248231142.

The spelling of 39660481 in words is "thirty-nine million, six hundred sixty thousand, four hundred eighty-one".