39438069 has 16 divisors (see below), whose sum is σ = 57582144. Its totient is φ = 23811200.

The previous prime is 39438067. The next prime is 39438071. The reversal of 39438069 is 96083493.

It is an interprime number because it is at equal distance from previous prime (39438067) and next prime (39438071).

It is a cyclic number.

It is not a de Polignac number, because 39438069 - 2¹ = 39438067 is a prime.

It is a super-2 number, since 2×39438069² = 3110722572897522, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 39438069.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39438067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7147 + ... + 11399.

It is an arithmetic number, because the mean of its divisors is an integer number (3598884).

Almost surely, 2^39438069 is an apocalyptic number.

It is an amenable number.

39438069 is a deficient number, since it is larger than the sum of its proper divisors (18144075).

39438069 is a wasteful number, since it uses less digits than its factorization.

39438069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4548.

The product of its (nonzero) digits is 139968, while the sum is 42.

The square root of 39438069 is about 6279.9736464415. The cubic root of 39438069 is about 340.3861500816.

The spelling of 39438069 in words is "thirty-nine million, four hundred thirty-eight thousand, sixty-nine".