38899967 has 2 divisors, whose sum is σ = 38899968. Its totient is φ = 38899966.

The previous prime is 38899963. The next prime is 38899981. The reversal of 38899967 is 76999883.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38899967 - 2² = 38899963 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 (38899963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19449983 + 19449984.

It is an arithmetic number, because the mean of its divisors is an integer number (19449984).

Almost surely, 2^38899967 is an apocalyptic number.

38899967 is a deficient number, since it is larger than the sum of its proper divisors (1).

38899967 is an equidigital number, since it uses as much as digits as its factorization.

38899967 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5878656, while the sum is 59.

The square root of 38899967 is about 6236.9838062961. The cubic root of 38899967 is about 338.8309532700.

The spelling of 38899967 in words is "thirty-eight million, eight hundred ninety-nine thousand, nine hundred sixty-seven".