38699797 has 2 divisors, whose sum is σ = 38699798. Its totient is φ = 38699796.

The previous prime is 38699767. The next prime is 38699807. The reversal of 38699797 is 79799683.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34562641 + 4137156 = 5879^2 + 2034^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38699797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38699707) 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, 19349898 + 19349899.

It is an arithmetic number, because the mean of its divisors is an integer number (19349899).

Almost surely, 2^38699797 is an apocalyptic number.

It is an amenable number.

38699797 is a deficient number, since it is larger than the sum of its proper divisors (1).

38699797 is an equidigital number, since it uses as much as digits as its factorization.

38699797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5143824, while the sum is 58.

The square root of 38699797 is about 6220.9160900948. The cubic root of 38699797 is about 338.2487723076.

The spelling of 38699797 in words is "thirty-eight million, six hundred ninety-nine thousand, seven hundred ninety-seven".