38922449 has 2 divisors, whose sum is σ = 38922450. Its totient is φ = 38922448.

The previous prime is 38922419. The next prime is 38922451. The reversal of 38922449 is 94422983.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23961025 + 14961424 = 4895^2 + 3868^2 .

It is an emirp because it is prime and its reverse (94422983) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38922449 is a prime.

It is a super-4 number, since 4×38922449⁴ (a number of 31 digits) contains 4444 as substring.

Together with 38922451, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (38922419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19461224 + 19461225.

It is an arithmetic number, because the mean of its divisors is an integer number (19461225).

Almost surely, 2^38922449 is an apocalyptic number.

It is an amenable number.

38922449 is a deficient number, since it is larger than the sum of its proper divisors (1).

38922449 is an equidigital number, since it uses as much as digits as its factorization.

38922449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 41.

The square root of 38922449 is about 6238.7858594441. The cubic root of 38922449 is about 338.8962157971.

The spelling of 38922449 in words is "thirty-eight million, nine hundred twenty-two thousand, four hundred forty-nine".