43438912387 has 8 divisors (see below), whose sum is σ = 46785539696. Its totient is φ = 40093024032.

The previous prime is 43438912373. The next prime is 43438912411. The reversal of 43438912387 is 78321983434.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43438912387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43438912327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59493 + ... + 300694.

It is an arithmetic number, because the mean of its divisors is an integer number (5848192462).

Almost surely, 2^43438912387 is an apocalyptic number.

43438912387 is a deficient number, since it is larger than the sum of its proper divisors (3346627309).

43438912387 is a wasteful number, since it uses less digits than its factorization.

43438912387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369477.

The product of its digits is 3483648, while the sum is 52.

The spelling of 43438912387 in words is "forty-three billion, four hundred thirty-eight million, nine hundred twelve thousand, three hundred eighty-seven".