38719989 has 48 divisors (see below), whose sum is σ = 70986240. Its totient is φ = 19752480.

The previous prime is 38719987. The next prime is 38720009. The reversal of 38719989 is 98991783.

It is not a de Polignac number, because 38719989 - 2¹ = 38719987 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38719981) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 40414 + ... + 41360.

It is an arithmetic number, because the mean of its divisors is an integer number (1478880).

Almost surely, 2^38719989 is an apocalyptic number.

It is an amenable number.

38719989 is a deficient number, since it is larger than the sum of its proper divisors (32266251).

38719989 is a wasteful number, since it uses less digits than its factorization.

38719989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1030 (or 1027 counting only the distinct ones).

The product of its digits is 979776, while the sum is 54.

The square root of 38719989 is about 6222.5387905581. The cubic root of 38719989 is about 338.3075902879.

It can be divided in two parts, 38 and 719989, that added together give a palindrome (720027).

The spelling of 38719989 in words is "thirty-eight million, seven hundred nineteen thousand, nine hundred eighty-nine".