38391149 has 4 divisors (see below), whose sum is σ = 38415036. Its totient is φ = 38367264.

The previous prime is 38391139. The next prime is 38391161. The reversal of 38391149 is 94119383.

It is a happy number.

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 8305924 + 30085225 = 2882^2 + 5485^2 .

It is a cyclic number.

It is not a de Polignac number, because 38391149 - 2¹² = 38387053 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 (38391109) 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, 9344 + ... + 12809.

It is an arithmetic number, because the mean of its divisors is an integer number (9603759).

Almost surely, 2^38391149 is an apocalyptic number.

It is an amenable number.

38391149 is a deficient number, since it is larger than the sum of its proper divisors (23887).

38391149 is a wasteful number, since it uses less digits than its factorization.

38391149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23886.

The product of its digits is 23328, while the sum is 38.

The square root of 38391149 is about 6196.0591507829. The cubic root of 38391149 is about 337.3471432174.

The spelling of 38391149 in words is "thirty-eight million, three hundred ninety-one thousand, one hundred forty-nine".