38991045 has 8 divisors (see below), whose sum is σ = 62385696. Its totient is φ = 20795216.

The previous prime is 38991037. The next prime is 38991061. The reversal of 38991045 is 54019983.

38991045 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 a cyclic number.

It is not a de Polignac number, because 38991045 - 2³ = 38991037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 38990994 and 38991012.

It is a congruent number.

It is an unprimeable number.

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, 1299687 + ... + 1299716.

It is an arithmetic number, because the mean of its divisors is an integer number (7798212).

Almost surely, 2^38991045 is an apocalyptic number.

It is an amenable number.

38991045 is a deficient number, since it is larger than the sum of its proper divisors (23394651).

38991045 is a wasteful number, since it uses less digits than its factorization.

38991045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2599411.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 38991045 is about 6244.2809834280. The cubic root of 38991045 is about 339.0951865039.

The spelling of 38991045 in words is "thirty-eight million, nine hundred ninety-one thousand, forty-five".