8921150387 has 4 divisors (see below), whose sum is σ = 9067398816. Its totient is φ = 8774901960.

The previous prime is 8921150377. The next prime is 8921150419. The reversal of 8921150387 is 7830511298.

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

It is a cyclic number.

It is not a de Polignac number, because 8921150387 - 2⁸ = 8921150131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8921150377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73124123 + ... + 73124244.

It is an arithmetic number, because the mean of its divisors is an integer number (2266849704).

Almost surely, 2^8921150387 is an apocalyptic number.

8921150387 is a deficient number, since it is larger than the sum of its proper divisors (146248429).

8921150387 is a wasteful number, since it uses less digits than its factorization.

8921150387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146248428.

The product of its (nonzero) digits is 120960, while the sum is 44.

The square root of 8921150387 is about 94451.8416284193. The cubic root of 8921150387 is about 2073.9914108972.

The spelling of 8921150387 in words is "eight billion, nine hundred twenty-one million, one hundred fifty thousand, three hundred eighty-seven".