38221679 has 2 divisors, whose sum is σ = 38221680. Its totient is φ = 38221678.

The previous prime is 38221663. The next prime is 38221709. The reversal of 38221679 is 97612283.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38221679 - 2⁴ = 38221663 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 (38221609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19110839 + 19110840.

It is an arithmetic number, because the mean of its divisors is an integer number (19110840).

Almost surely, 2^38221679 is an apocalyptic number.

38221679 is a deficient number, since it is larger than the sum of its proper divisors (1).

38221679 is an equidigital number, since it uses as much as digits as its factorization.

38221679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 38.

The square root of 38221679 is about 6182.3683973054. The cubic root of 38221679 is about 336.8500273378.

The spelling of 38221679 in words is "thirty-eight million, two hundred twenty-one thousand, six hundred seventy-nine".