38243989 has 8 divisors (see below), whose sum is σ = 43772480. Its totient is φ = 32731776.

The previous prime is 38243971. The next prime is 38244013. The reversal of 38243989 is 98934283.

38243989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 38243989 - 2⁵ = 38243957 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 (38243929) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1477 + ... + 8869.

It is an arithmetic number, because the mean of its divisors is an integer number (5471560).

Almost surely, 2^38243989 is an apocalyptic number.

It is an amenable number.

38243989 is a deficient number, since it is larger than the sum of its proper divisors (5528491).

38243989 is an equidigital number, since it uses as much as digits as its factorization.

38243989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8139.

The product of its digits is 373248, while the sum is 46.

The square root of 38243989 is about 6184.1724587854. The cubic root of 38243989 is about 336.9155543945.

The spelling of 38243989 in words is "thirty-eight million, two hundred forty-three thousand, nine hundred eighty-nine".