38958149 has 4 divisors (see below), whose sum is σ = 38970636. Its totient is φ = 38945664.

The previous prime is 38958131. The next prime is 38958163. The reversal of 38958149 is 94185983.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 27227524 + 11730625 = 5218^2 + 3425^2 .

It is a cyclic number.

It is not a de Polignac number, because 38958149 - 2¹⁶ = 38892613 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 (38958109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2927 + ... + 9299.

It is an arithmetic number, because the mean of its divisors is an integer number (9742659).

Almost surely, 2^38958149 is an apocalyptic number.

It is an amenable number.

38958149 is a deficient number, since it is larger than the sum of its proper divisors (12487).

38958149 is an equidigital number, since it uses as much as digits as its factorization.

38958149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12486.

The product of its digits is 311040, while the sum is 47.

The square root of 38958149 is about 6241.6463373056. The cubic root of 38958149 is about 338.9997969618. Note that the first 3 decimals are identical.

The spelling of 38958149 in words is "thirty-eight million, nine hundred fifty-eight thousand, one hundred forty-nine".