38808929 has 2 divisors, whose sum is σ = 38808930. Its totient is φ = 38808928.

The previous prime is 38808923. The next prime is 38808971. The reversal of 38808929 is 92980883.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24482704 + 14326225 = 4948^2 + 3785^2 .

It is an emirp because it is prime and its reverse (92980883) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38808929 is a prime.

It is a super-2 number, since 2×38808929² = 3012265940254082, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (38808923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19404464 + 19404465.

It is an arithmetic number, because the mean of its divisors is an integer number (19404465).

Almost surely, 2^38808929 is an apocalyptic number.

It is an amenable number.

38808929 is a deficient number, since it is larger than the sum of its proper divisors (1).

38808929 is an equidigital number, since it uses as much as digits as its factorization.

38808929 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 47.

The square root of 38808929 is about 6229.6812920084. The cubic root of 38808929 is about 338.5664235930.

The spelling of 38808929 in words is "thirty-eight million, eight hundred eight thousand, nine hundred twenty-nine".