921149027 has 4 divisors (see below), whose sum is σ = 921209880. Its totient is φ = 921088176.

The previous prime is 921149017. The next prime is 921149039. The reversal of 921149027 is 720941129.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 921149027 - 2²⁰ = 920100451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (921149017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11999 + ... + 44567.

It is an arithmetic number, because the mean of its divisors is an integer number (230302470).

Almost surely, 2^921149027 is an apocalyptic number.

921149027 is a deficient number, since it is larger than the sum of its proper divisors (60853).

921149027 is a wasteful number, since it uses less digits than its factorization.

921149027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60852.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 921149027 is about 30350.4370149756. The cubic root of 921149027 is about 972.9935602406.

The spelling of 921149027 in words is "nine hundred twenty-one million, one hundred forty-nine thousand, twenty-seven".