38954557 has 2 divisors, whose sum is σ = 38954558. Its totient is φ = 38954556.

The previous prime is 38954549. The next prime is 38954563. The reversal of 38954557 is 75545983.

38954557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28579716 + 10374841 = 5346^2 + 3221^2 .

It is an emirp because it is prime and its reverse (75545983) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38954557 - 2³ = 38954549 is a prime.

It is a super-2 number, since 2×38954557² = 3034915022132498, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38954257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19477278 + 19477279.

It is an arithmetic number, because the mean of its divisors is an integer number (19477279).

Almost surely, 2^38954557 is an apocalyptic number.

It is an amenable number.

38954557 is a deficient number, since it is larger than the sum of its proper divisors (1).

38954557 is an equidigital number, since it uses as much as digits as its factorization.

38954557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 756000, while the sum is 46.

The square root of 38954557 is about 6241.3585860772. The cubic root of 38954557 is about 338.9893778777.

It can be divided in two parts, 389 and 54557, that added together give a triangular number (54946 = T₃₃₁).

The spelling of 38954557 in words is "thirty-eight million, nine hundred fifty-four thousand, five hundred fifty-seven".