38939161 has 6 divisors (see below), whose sum is σ = 40706330. Its totient is φ = 37245648.

The previous prime is 38939137. The next prime is 38939183. The reversal of 38939161 is 16193983.

It can be written as a sum of positive squares in only one way, i.e., 21799561 + 17139600 = 4669^2 + 4140^2 .

It is not a de Polignac number, because 38939161 - 2¹¹ = 38937113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38930161) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36276 + ... + 37333.

Almost surely, 2^38939161 is an apocalyptic number.

It is an amenable number.

38939161 is a deficient number, since it is larger than the sum of its proper divisors (1767169).

38939161 is an equidigital number, since it uses as much as digits as its factorization.

38939161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73655 (or 73632 counting only the distinct ones).

The product of its digits is 34992, while the sum is 40.

The square root of 38939161 is about 6240.1250788746. The cubic root of 38939161 is about 338.9447124300.

The spelling of 38939161 in words is "thirty-eight million, nine hundred thirty-nine thousand, one hundred sixty-one".