38452391 has 2 divisors, whose sum is σ = 38452392. Its totient is φ = 38452390.

The previous prime is 38452339. The next prime is 38452411. The reversal of 38452391 is 19325483.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38452391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38452891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19226195 + 19226196.

It is an arithmetic number, because the mean of its divisors is an integer number (19226196).

Almost surely, 2^38452391 is an apocalyptic number.

38452391 is a deficient number, since it is larger than the sum of its proper divisors (1).

38452391 is an equidigital number, since it uses as much as digits as its factorization.

38452391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 35.

The square root of 38452391 is about 6200.9991936784. Note that the first 3 decimals coincide. The cubic root of 38452391 is about 337.5264279259.

The spelling of 38452391 in words is "thirty-eight million, four hundred fifty-two thousand, three hundred ninety-one".