438768986 has 4 divisors (see below), whose sum is σ = 658153482. Its totient is φ = 219384492.

The previous prime is 438768971. The next prime is 438769073. The reversal of 438768986 is 689867834.

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., 390813361 + 47955625 = 19769^2 + 6925^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109692245 + ... + 109692248.

Almost surely, 2^438768986 is an apocalyptic number.

438768986 is a deficient number, since it is larger than the sum of its proper divisors (219384496).

438768986 is a wasteful number, since it uses less digits than its factorization.

438768986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219384495.

The product of its digits is 13934592, while the sum is 59.

The square root of 438768986 is about 20946.8132659839. The cubic root of 438768986 is about 759.8805133022.

The spelling of 438768986 in words is "four hundred thirty-eight million, seven hundred sixty-eight thousand, nine hundred eighty-six".