38905871 has 2 divisors, whose sum is σ = 38905872. Its totient is φ = 38905870.

The previous prime is 38905859. The next prime is 38905883. The reversal of 38905871 is 17850983.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (38905859) and next prime (38905883).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38905871 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38905831) 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, 19452935 + 19452936.

It is an arithmetic number, because the mean of its divisors is an integer number (19452936).

Almost surely, 2^38905871 is an apocalyptic number.

38905871 is a deficient number, since it is larger than the sum of its proper divisors (1).

38905871 is an equidigital number, since it uses as much as digits as its factorization.

38905871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 41.

The square root of 38905871 is about 6237.4570940408. The cubic root of 38905871 is about 338.8480943021.

The spelling of 38905871 in words is "thirty-eight million, nine hundred five thousand, eight hundred seventy-one".