38699849 has 2 divisors, whose sum is σ = 38699850. Its totient is φ = 38699848.

The previous prime is 38699819. The next prime is 38699879. The reversal of 38699849 is 94899683.

It is a balanced prime because it is at equal distance from previous prime (38699819) and next prime (38699879).

It can be written as a sum of positive squares in only one way, i.e., 38688400 + 11449 = 6220^2 + 107^2 .

It is an emirp because it is prime and its reverse (94899683) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38699849 - 2¹² = 38695753 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 38699794 and 38699803.

It is not a weakly prime, because it can be changed into another prime (38699819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19349924 + 19349925.

It is an arithmetic number, because the mean of its divisors is an integer number (19349925).

Almost surely, 2^38699849 is an apocalyptic number.

It is an amenable number.

38699849 is a deficient number, since it is larger than the sum of its proper divisors (1).

38699849 is an equidigital number, since it uses as much as digits as its factorization.

38699849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3359232, while the sum is 56.

The square root of 38699849 is about 6220.9202695421. The cubic root of 38699849 is about 338.2489238064.

The spelling of 38699849 in words is "thirty-eight million, six hundred ninety-nine thousand, eight hundred forty-nine".