38206249 has 4 divisors (see below), whose sum is σ = 38314836. Its totient is φ = 38097664.

The previous prime is 38206241. The next prime is 38206271. The reversal of 38206249 is 94260283.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94260283 = 13 ⋅7250791.

It can be written as a sum of positive squares in 2 ways, for example, as 21949225 + 16257024 = 4685^2 + 4032^2 .

It is a cyclic number.

It is not a de Polignac number, because 38206249 - 2³ = 38206241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38206241) 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, 53764 + ... + 54469.

It is an arithmetic number, because the mean of its divisors is an integer number (9578709).

Almost surely, 2^38206249 is an apocalyptic number.

It is an amenable number.

38206249 is a deficient number, since it is larger than the sum of its proper divisors (108587).

38206249 is a wasteful number, since it uses less digits than its factorization.

38206249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108586.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 38206249 is about 6181.1203677003. The cubic root of 38206249 is about 336.8046927211.

The spelling of 38206249 in words is "thirty-eight million, two hundred six thousand, two hundred forty-nine".