438069987 has 6 divisors (see below), whose sum is σ = 632767772. Its totient is φ = 292046652.

The previous prime is 438069979. The next prime is 438070013. The reversal of 438069987 is 789960834.

It is not a de Polignac number, because 438069987 - 2³ = 438069979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (438069977) 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, 24337213 + ... + 24337230.

Almost surely, 2^438069987 is an apocalyptic number.

438069987 is a deficient number, since it is larger than the sum of its proper divisors (194697785).

438069987 is a wasteful number, since it uses less digits than its factorization.

438069987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48674449 (or 48674446 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The square root of 438069987 is about 20930.1215237753. The cubic root of 438069987 is about 759.4767791842.

The spelling of 438069987 in words is "four hundred thirty-eight million, sixty-nine thousand, nine hundred eighty-seven".