38772439 has 2 divisors, whose sum is σ = 38772440. Its totient is φ = 38772438.

The previous prime is 38772401. The next prime is 38772443. The reversal of 38772439 is 93427783.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38772439 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 38772395 and 38772404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38772479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19386219 + 19386220.

It is an arithmetic number, because the mean of its divisors is an integer number (19386220).

Almost surely, 2^38772439 is an apocalyptic number.

38772439 is a deficient number, since it is larger than the sum of its proper divisors (1).

38772439 is an equidigital number, since it uses as much as digits as its factorization.

38772439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 254016, while the sum is 43.

The square root of 38772439 is about 6226.7518820008. The cubic root of 38772439 is about 338.4602782362.

The spelling of 38772439 in words is "thirty-eight million, seven hundred seventy-two thousand, four hundred thirty-nine".