38881399 has 2 divisors, whose sum is σ = 38881400. Its totient is φ = 38881398.

The previous prime is 38881387. The next prime is 38881411. The reversal of 38881399 is 99318883.

It is a balanced prime because it is at equal distance from previous prime (38881387) and next prime (38881411).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38881399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38881309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19440699 + 19440700.

It is an arithmetic number, because the mean of its divisors is an integer number (19440700).

Almost surely, 2^38881399 is an apocalyptic number.

38881399 is a deficient number, since it is larger than the sum of its proper divisors (1).

38881399 is an equidigital number, since it uses as much as digits as its factorization.

38881399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 373248, while the sum is 49.

The square root of 38881399 is about 6235.4950886036. The cubic root of 38881399 is about 338.7770336491. Note that the first 3 decimals are identical.

The spelling of 38881399 in words is "thirty-eight million, eight hundred eighty-one thousand, three hundred ninety-nine".