38888999 has 2 divisors, whose sum is σ = 38889000. Its totient is φ = 38888998.

The previous prime is 38888987. The next prime is 38889001. The reversal of 38888999 is 99988883.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 38888999 - 2¹² = 38884903 is a prime.

Together with 38889001, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38882999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19444499 + 19444500.

It is an arithmetic number, because the mean of its divisors is an integer number (19444500).

Almost surely, 2^38888999 is an apocalyptic number.

38888999 is a deficient number, since it is larger than the sum of its proper divisors (1).

38888999 is an equidigital number, since it uses as much as digits as its factorization.

38888999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8957952, while the sum is 62.

The square root of 38888999 is about 6236.1044731467. The cubic root of 38888999 is about 338.7991053662.

The spelling of 38888999 in words is "thirty-eight million, eight hundred eighty-eight thousand, nine hundred ninety-nine".