38220929 has 2 divisors, whose sum is σ = 38220930. Its totient is φ = 38220928.

The previous prime is 38220893. The next prime is 38220977. The reversal of 38220929 is 92902283.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35724529 + 2496400 = 5977^2 + 1580^2 .

It is a cyclic number.

It is not a de Polignac number, because 38220929 - 2¹⁶ = 38155393 is a prime.

It is not a weakly prime, because it can be changed into another prime (38220529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19110464 + 19110465.

It is an arithmetic number, because the mean of its divisors is an integer number (19110465).

Almost surely, 2^38220929 is an apocalyptic number.

It is an amenable number.

38220929 is a deficient number, since it is larger than the sum of its proper divisors (1).

38220929 is an equidigital number, since it uses as much as digits as its factorization.

38220929 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 38220929 is about 6182.3077406418. The cubic root of 38220929 is about 336.8478240578.

The spelling of 38220929 in words is "thirty-eight million, two hundred twenty thousand, nine hundred twenty-nine".