38447413 has 2 divisors, whose sum is σ = 38447414. Its totient is φ = 38447412.

The previous prime is 38447411. The next prime is 38447429. The reversal of 38447413 is 31474483.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30393169 + 8054244 = 5513^2 + 2838^2 .

It is a cyclic number.

It is not a de Polignac number, because 38447413 - 2¹ = 38447411 is a prime.

Together with 38447411, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38447411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19223706 + 19223707.

It is an arithmetic number, because the mean of its divisors is an integer number (19223707).

Almost surely, 2^38447413 is an apocalyptic number.

It is an amenable number.

38447413 is a deficient number, since it is larger than the sum of its proper divisors (1).

38447413 is an equidigital number, since it uses as much as digits as its factorization.

38447413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256, while the sum is 34.

The square root of 38447413 is about 6200.5977937615. The cubic root of 38447413 is about 337.5118620431.

The spelling of 38447413 in words is "thirty-eight million, four hundred forty-seven thousand, four hundred thirteen".