38448391 has 2 divisors, whose sum is σ = 38448392. Its totient is φ = 38448390.

The previous prime is 38448383. The next prime is 38448409. The reversal of 38448391 is 19384483.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38448391 - 2³ = 38448383 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 (38448301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19224195 + 19224196.

It is an arithmetic number, because the mean of its divisors is an integer number (19224196).

Almost surely, 2^38448391 is an apocalyptic number.

38448391 is a deficient number, since it is larger than the sum of its proper divisors (1).

38448391 is an equidigital number, since it uses as much as digits as its factorization.

38448391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 40.

The square root of 38448391 is about 6200.6766566239. The cubic root of 38448391 is about 337.5147238204.

The spelling of 38448391 in words is "thirty-eight million, four hundred forty-eight thousand, three hundred ninety-one".