38937889 has 4 divisors (see below), whose sum is σ = 39076740. Its totient is φ = 38799040.

The previous prime is 38937883. The next prime is 38937907. The reversal of 38937889 is 98873983.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26214400 + 12723489 = 5120^2 + 3567^2 .

It is a cyclic number.

It is not a de Polignac number, because 38937889 - 2¹³ = 38929697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38937883) 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, 69004 + ... + 69565.

It is an arithmetic number, because the mean of its divisors is an integer number (9769185).

Almost surely, 2^38937889 is an apocalyptic number.

It is an amenable number.

38937889 is a deficient number, since it is larger than the sum of its proper divisors (138851).

38937889 is a wasteful number, since it uses less digits than its factorization.

38937889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138850.

The product of its digits is 2612736, while the sum is 55.

The square root of 38937889 is about 6240.0231570083. The cubic root of 38937889 is about 338.9410216950.

The spelling of 38937889 in words is "thirty-eight million, nine hundred thirty-seven thousand, eight hundred eighty-nine".