39245081 has 4 divisors (see below), whose sum is σ = 39260964. Its totient is φ = 39229200.

The previous prime is 39245053. The next prime is 39245099. The reversal of 39245081 is 18054293.

39245081 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 an emirpimes, since its reverse is a distinct semiprime: 18054293 = 139 ⋅129887.

It can be written as a sum of positive squares in 2 ways, for example, as 20025625 + 19219456 = 4475^2 + 4384^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39245081 is a prime.

It is a super-3 number, since 3×39245081³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (39245681) 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, 3350 + ... + 9471.

It is an arithmetic number, because the mean of its divisors is an integer number (9815241).

Almost surely, 2^39245081 is an apocalyptic number.

It is an amenable number.

39245081 is a deficient number, since it is larger than the sum of its proper divisors (15883).

39245081 is a wasteful number, since it uses less digits than its factorization.

39245081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15882.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 39245081 is about 6264.5894518316. The cubic root of 39245081 is about 339.8300217256.

The spelling of 39245081 in words is "thirty-nine million, two hundred forty-five thousand, eighty-one".