38729423 has 8 divisors (see below), whose sum is σ = 39099456. Its totient is φ = 38361600.

The previous prime is 38729407. The next prime is 38729441. The reversal of 38729423 is 32492783.

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 38729423 - 2⁴ = 38729407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38729443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65015 + ... + 65607.

It is an arithmetic number, because the mean of its divisors is an integer number (4887432).

Almost surely, 2^38729423 is an apocalyptic number.

38729423 is a deficient number, since it is larger than the sum of its proper divisors (370033).

38729423 is a wasteful number, since it uses less digits than its factorization.

38729423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105.

The product of its digits is 72576, while the sum is 38.

The square root of 38729423 is about 6223.2967951079. The cubic root of 38729423 is about 338.3350639065.

The spelling of 38729423 in words is "thirty-eight million, seven hundred twenty-nine thousand, four hundred twenty-three".