39545939 has 8 divisors (see below), whose sum is σ = 40600560. Its totient is φ = 38497536.

The previous prime is 39545929. The next prime is 39545953. The reversal of 39545939 is 93954593.

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 39545939 - 2¹⁶ = 39480403 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 39545893 and 39545902.

It is not an unprimeable number, because it can be changed into a prime (39545929) 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, 13127 + ... + 15855.

It is an arithmetic number, because the mean of its divisors is an integer number (5075070).

Almost surely, 2^39545939 is an apocalyptic number.

39545939 is a deficient number, since it is larger than the sum of its proper divisors (1054621).

39545939 is a wasteful number, since it uses less digits than its factorization.

39545939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3109.

The product of its digits is 656100, while the sum is 47.

The square root of 39545939 is about 6288.5561935948. The cubic root of 39545939 is about 340.6962060715.

The spelling of 39545939 in words is "thirty-nine million, five hundred forty-five thousand, nine hundred thirty-nine".