38424649 has 2 divisors, whose sum is σ = 38424650. Its totient is φ = 38424648.

The previous prime is 38424647. The next prime is 38424689. The reversal of 38424649 is 94642483.

It is an a-pointer prime, because the next prime (38424689) can be obtained adding 38424649 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24324624 + 14100025 = 4932^2 + 3755^2 .

It is a cyclic number.

It is not a de Polignac number, because 38424649 - 2¹ = 38424647 is a prime.

Together with 38424647, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (38424643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19212324 + 19212325.

It is an arithmetic number, because the mean of its divisors is an integer number (19212325).

Almost surely, 2^38424649 is an apocalyptic number.

It is an amenable number.

38424649 is a deficient number, since it is larger than the sum of its proper divisors (1).

38424649 is an equidigital number, since it uses as much as digits as its factorization.

38424649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 165888, while the sum is 40.

The square root of 38424649 is about 6198.7618925072. The cubic root of 38424649 is about 337.4452373882.

The spelling of 38424649 in words is "thirty-eight million, four hundred twenty-four thousand, six hundred forty-nine".