38390977 has 2 divisors, whose sum is σ = 38390978. Its totient is φ = 38390976.

The previous prime is 38390969. The next prime is 38390987. The reversal of 38390977 is 77909383.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33686416 + 4704561 = 5804^2 + 2169^2 .

It is a cyclic number.

It is not a de Polignac number, because 38390977 - 2³ = 38390969 is a prime.

It is not a weakly prime, because it can be changed into another prime (38390987) 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, 19195488 + 19195489.

It is an arithmetic number, because the mean of its divisors is an integer number (19195489).

Almost surely, 2^38390977 is an apocalyptic number.

It is an amenable number.

38390977 is a deficient number, since it is larger than the sum of its proper divisors (1).

38390977 is an equidigital number, since it uses as much as digits as its factorization.

38390977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 285768, while the sum is 46.

The square root of 38390977 is about 6196.0452709773. The cubic root of 38390977 is about 337.3466394225.

The spelling of 38390977 in words is "thirty-eight million, three hundred ninety thousand, nine hundred seventy-seven".