39800545 has 8 divisors (see below), whose sum is σ = 48925800. Its totient is φ = 31063680.

The previous prime is 39800543. The next prime is 39800561. The reversal of 39800545 is 54500893.

It can be written as a sum of positive squares in 4 ways, for example, as 4231249 + 35569296 = 2057^2 + 5964^2 .

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

It is not a de Polignac number, because 39800545 - 2¹ = 39800543 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 39800545.

It is not an unprimeable number, because it can be changed into a prime (39800543) 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, 96870 + ... + 97279.

It is an arithmetic number, because the mean of its divisors is an integer number (6115725).

Almost surely, 2^39800545 is an apocalyptic number.

It is an amenable number.

39800545 is a deficient number, since it is larger than the sum of its proper divisors (9125255).

39800545 is a wasteful number, since it uses less digits than its factorization.

39800545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194195.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 39800545 is about 6308.7673122410. The cubic root of 39800545 is about 341.4258031389.

The spelling of 39800545 in words is "thirty-nine million, eight hundred thousand, five hundred forty-five".