38319989 has 8 divisors (see below), whose sum is σ = 40886208. Its totient is φ = 35788480.

The previous prime is 38319973. The next prime is 38319997. The reversal of 38319989 is 98991383.

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 38319989 - 2⁴ = 38319973 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 (38319959) 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, 6377 + ... + 10830.

It is an arithmetic number, because the mean of its divisors is an integer number (5110776).

Almost surely, 2^38319989 is an apocalyptic number.

It is an amenable number.

38319989 is a deficient number, since it is larger than the sum of its proper divisors (2566219).

38319989 is a wasteful number, since it uses less digits than its factorization.

38319989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17355.

The product of its digits is 419904, while the sum is 50.

The square root of 38319989 is about 6190.3141277321. The cubic root of 38319989 is about 337.1385841222.

The spelling of 38319989 in words is "thirty-eight million, three hundred nineteen thousand, nine hundred eighty-nine".