38939149 has 4 divisors (see below), whose sum is σ = 39472636. Its totient is φ = 38405664.

The previous prime is 38939137. The next prime is 38939183. The reversal of 38939149 is 94193983.

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 25300900 + 13638249 = 5030^2 + 3693^2 .

It is a cyclic number.

It is not a de Polignac number, because 38939149 - 2¹⁵ = 38906381 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38939099 and 38939108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38939249) 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, 266634 + ... + 266779.

It is an arithmetic number, because the mean of its divisors is an integer number (9868159).

Almost surely, 2^38939149 is an apocalyptic number.

It is an amenable number.

38939149 is a deficient number, since it is larger than the sum of its proper divisors (533487).

38939149 is an equidigital number, since it uses as much as digits as its factorization.

38939149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533486.

The product of its digits is 209952, while the sum is 46.

The square root of 38939149 is about 6240.1241173554. The cubic root of 38939149 is about 338.9446776121.

The spelling of 38939149 in words is "thirty-eight million, nine hundred thirty-nine thousand, one hundred forty-nine".