38621249 has 2 divisors, whose sum is σ = 38621250. Its totient is φ = 38621248.

The previous prime is 38621239. The next prime is 38621269. The reversal of 38621249 is 94212683.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36240400 + 2380849 = 6020^2 + 1543^2 .

It is an emirp because it is prime and its reverse (94212683) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38621249 - 2⁸ = 38620993 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (38621239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19310624 + 19310625.

It is an arithmetic number, because the mean of its divisors is an integer number (19310625).

Almost surely, 2^38621249 is an apocalyptic number.

It is an amenable number.

38621249 is a deficient number, since it is larger than the sum of its proper divisors (1).

38621249 is an equidigital number, since it uses as much as digits as its factorization.

38621249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 35.

The square root of 38621249 is about 6214.5996653043. The cubic root of 38621249 is about 338.0197723107.

The spelling of 38621249 in words is "thirty-eight million, six hundred twenty-one thousand, two hundred forty-nine".