39145307 has 4 divisors (see below), whose sum is σ = 39174240. Its totient is φ = 39116376.

The previous prime is 39145303. The next prime is 39145367. The reversal of 39145307 is 70354193.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 39145307 - 2² = 39145303 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39145303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12332 + ... + 15177.

It is an arithmetic number, because the mean of its divisors is an integer number (9793560).

Almost surely, 2^39145307 is an apocalyptic number.

39145307 is a deficient number, since it is larger than the sum of its proper divisors (28933).

39145307 is a wasteful number, since it uses less digits than its factorization.

39145307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28932.

The product of its (nonzero) digits is 11340, while the sum is 32.

The square root of 39145307 is about 6256.6210529326. The cubic root of 39145307 is about 339.5417904877.

The spelling of 39145307 in words is "thirty-nine million, one hundred forty-five thousand, three hundred seven".