38778443 has 6 divisors (see below), whose sum is σ = 42624372. Its totient is φ = 35253020.

The previous prime is 38778433. The next prime is 38778451. The reversal of 38778443 is 34487783.

It is not a de Polignac number, because 38778443 - 2⁶ = 38778379 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38778394 and 38778403.

It is not an unprimeable number, because it can be changed into a prime (38778433) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 160121 + ... + 160362.

It is an arithmetic number, because the mean of its divisors is an integer number (7104062).

Almost surely, 2^38778443 is an apocalyptic number.

38778443 is a deficient number, since it is larger than the sum of its proper divisors (3845929).

38778443 is a wasteful number, since it uses less digits than its factorization.

38778443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320505 (or 320494 counting only the distinct ones).

The product of its digits is 451584, while the sum is 44.

The square root of 38778443 is about 6227.2339766545. The cubic root of 38778443 is about 338.4777477814.

The spelling of 38778443 in words is "thirty-eight million, seven hundred seventy-eight thousand, four hundred forty-three".