38015989 has 4 divisors (see below), whose sum is σ = 41472000. Its totient is φ = 34559980.

The previous prime is 38015977. The next prime is 38016007. The reversal of 38015989 is 98951083.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 38015989 - 2⁹ = 38015477 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 (38015969) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1727989 + ... + 1728010.

It is an arithmetic number, because the mean of its divisors is an integer number (10368000).

Almost surely, 2^38015989 is an apocalyptic number.

It is an amenable number.

38015989 is a deficient number, since it is larger than the sum of its proper divisors (3456011).

38015989 is a wasteful number, since it uses less digits than its factorization.

38015989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3456010.

The product of its (nonzero) digits is 77760, while the sum is 43.

The square root of 38015989 is about 6165.7107457292. The cubic root of 38015989 is about 336.2446872476.

The spelling of 38015989 in words is "thirty-eight million, fifteen thousand, nine hundred eighty-nine".