39138953 has 8 divisors (see below), whose sum is σ = 44932608. Its totient is φ = 33395904.

The previous prime is 39138949. The next prime is 39138961. The reversal of 39138953 is 35983193.

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 39138953 - 2² = 39138949 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 39138953.

It is not an unprimeable number, because it can be changed into a prime (39138973) 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, 10976 + ... + 14097.

It is an arithmetic number, because the mean of its divisors is an integer number (5616576).

Almost surely, 2^39138953 is an apocalyptic number.

It is an amenable number.

39138953 is a deficient number, since it is larger than the sum of its proper divisors (5793655).

39138953 is a wasteful number, since it uses less digits than its factorization.

39138953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25303.

The product of its digits is 87480, while the sum is 41.

The square root of 39138953 is about 6256.1132502537. The cubic root of 39138953 is about 339.5234182106.

The spelling of 39138953 in words is "thirty-nine million, one hundred thirty-eight thousand, nine hundred fifty-three".