38966443 has 4 divisors (see below), whose sum is σ = 39027688. Its totient is φ = 38905200.

The previous prime is 38966429. The next prime is 38966449. The reversal of 38966443 is 34466983.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 38966443 - 2¹⁷ = 38835371 is a prime.

It is a super-3 number, since 3×38966443³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 38966443.

It is not an unprimeable number, because it can be changed into a prime (38966449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29658 + ... + 30943.

It is an arithmetic number, because the mean of its divisors is an integer number (9756922).

Almost surely, 2^38966443 is an apocalyptic number.

38966443 is a deficient number, since it is larger than the sum of its proper divisors (61245).

38966443 is an equidigital number, since it uses as much as digits as its factorization.

38966443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61244.

The product of its digits is 373248, while the sum is 43.

The square root of 38966443 is about 6242.3107099855. The cubic root of 38966443 is about 339.0238523895.

The spelling of 38966443 in words is "thirty-eight million, nine hundred sixty-six thousand, four hundred forty-three".