39960845 has 8 divisors (see below), whose sum is σ = 48303864. Its totient is φ = 31734784.

The previous prime is 39960841. The next prime is 39960881. The reversal of 39960845 is 54806993.

It can be written as a sum of positive squares in 4 ways, for example, as 16273156 + 23687689 = 4034^2 + 4867^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 39960845 - 2² = 39960841 is a prime.

It is a super-2 number, since 2×39960845² = 3193738266228050, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 39960796 and 39960805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39960841) 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, 28484 + ... + 29853.

It is an arithmetic number, because the mean of its divisors is an integer number (6037983).

Almost surely, 2^39960845 is an apocalyptic number.

It is an amenable number.

39960845 is a deficient number, since it is larger than the sum of its proper divisors (8343019).

39960845 is a wasteful number, since it uses less digits than its factorization.

39960845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58479.

The product of its (nonzero) digits is 233280, while the sum is 44.

The square root of 39960845 is about 6321.4590879005. The cubic root of 39960845 is about 341.8835627243.

The spelling of 39960845 in words is "thirty-nine million, nine hundred sixty thousand, eight hundred forty-five".