38429779 has 2 divisors, whose sum is σ = 38429780. Its totient is φ = 38429778.

The previous prime is 38429771. The next prime is 38429789. The reversal of 38429779 is 97792483.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38429779 - 2³ = 38429771 is a prime.

It is not a weakly prime, because it can be changed into another prime (38429771) 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, 19214889 + 19214890.

It is an arithmetic number, because the mean of its divisors is an integer number (19214890).

Almost surely, 2^38429779 is an apocalyptic number.

38429779 is a deficient number, since it is larger than the sum of its proper divisors (1).

38429779 is an equidigital number, since it uses as much as digits as its factorization.

38429779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 762048, while the sum is 49.

The square root of 38429779 is about 6199.1756710066. The cubic root of 38429779 is about 337.4602539386.

The spelling of 38429779 in words is "thirty-eight million, four hundred twenty-nine thousand, seven hundred seventy-nine".