38869491 has 4 divisors (see below), whose sum is σ = 51825992. Its totient is φ = 25912992.

The previous prime is 38869489. The next prime is 38869513. The reversal of 38869491 is 19496883.

38869491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 38869491 - 2¹ = 38869489 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 38869491.

It is not an unprimeable number, because it can be changed into a prime (38869591) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 6478246 + ... + 6478251.

It is an arithmetic number, because the mean of its divisors is an integer number (12956498).

Almost surely, 2^38869491 is an apocalyptic number.

38869491 is a deficient number, since it is larger than the sum of its proper divisors (12956501).

38869491 is a wasteful number, since it uses less digits than its factorization.

38869491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12956500.

The product of its digits is 373248, while the sum is 48.

The square root of 38869491 is about 6234.5401594665. The cubic root of 38869491 is about 338.7424449689.

The spelling of 38869491 in words is "thirty-eight million, eight hundred sixty-nine thousand, four hundred ninety-one".