38729994 has 32 divisors (see below), whose sum is σ = 79761024. Its totient is φ = 12529920.

The previous prime is 38729983. The next prime is 38730001. The reversal of 38729994 is 49992783.

38729994 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76747 + ... + 77249.

It is an arithmetic number, because the mean of its divisors is an integer number (2492532).

Almost surely, 2^38729994 is an apocalyptic number.

38729994 is an abundant number, since it is smaller than the sum of its proper divisors (41031030).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

38729994 is a wasteful number, since it uses less digits than its factorization.

38729994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 862.

The product of its digits is 979776, while the sum is 51.

The square root of 38729994 is about 6223.3426709446. The cubic root of 38729994 is about 338.3367266249.

It can be divided in two parts, 387 and 29994, that added together give a triangular number (30381 = T₂₄₆).

The spelling of 38729994 in words is "thirty-eight million, seven hundred twenty-nine thousand, nine hundred ninety-four".