38400071 has 2 divisors, whose sum is σ = 38400072. Its totient is φ = 38400070.

The previous prime is 38400023. The next prime is 38400073. The reversal of 38400071 is 17000483.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (17000483) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38400071 - 2¹⁴ = 38383687 is a prime.

Together with 38400073, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38400073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19200035 + 19200036.

It is an arithmetic number, because the mean of its divisors is an integer number (19200036).

Almost surely, 2^38400071 is an apocalyptic number.

38400071 is a deficient number, since it is larger than the sum of its proper divisors (1).

38400071 is an equidigital number, since it uses as much as digits as its factorization.

38400071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 38400071 is about 6196.7790827171. The cubic root of 38400071 is about 337.3732740502.

The spelling of 38400071 in words is "thirty-eight million, four hundred thousand, seventy-one".