38789978 has 4 divisors (see below), whose sum is σ = 58184970. Its totient is φ = 19394988.

The previous prime is 38789957. The next prime is 38789981. The reversal of 38789978 is 87998783.

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

It can be written as a sum of positive squares in only one way, i.e., 28440889 + 10349089 = 5333^2 + 3217^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9697493 + ... + 9697496.

Almost surely, 2^38789978 is an apocalyptic number.

38789978 is a deficient number, since it is larger than the sum of its proper divisors (19394992).

38789978 is a wasteful number, since it uses less digits than its factorization.

38789978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19394991.

The product of its digits is 6096384, while the sum is 59.

The square root of 38789978 is about 6228.1600814366. The cubic root of 38789978 is about 338.5113055475.

The spelling of 38789978 in words is "thirty-eight million, seven hundred eighty-nine thousand, nine hundred seventy-eight".