38840393973 has 8 divisors (see below), whose sum is σ = 51814878336. Its totient is φ = 25879752800.

The previous prime is 38840393957. The next prime is 38840393987. The reversal of 38840393973 is 37939304883.

It is a happy number.

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 38840393973 - 2⁴ = 38840393957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38840393773) 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, 3454248 + ... + 3465473.

It is an arithmetic number, because the mean of its divisors is an integer number (6476859792).

Almost surely, 2^38840393973 is an apocalyptic number.

It is an amenable number.

38840393973 is a deficient number, since it is larger than the sum of its proper divisors (12974484363).

38840393973 is a wasteful number, since it uses less digits than its factorization.

38840393973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6921595.

The product of its (nonzero) digits is 11757312, while the sum is 57.

The spelling of 38840393973 in words is "thirty-eight billion, eight hundred forty million, three hundred ninety-three thousand, nine hundred seventy-three".