921054149 has 2 divisors, whose sum is σ = 921054150. Its totient is φ = 921054148.

The previous prime is 921054139. The next prime is 921054161. The reversal of 921054149 is 941450129.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 837697249 + 83356900 = 28943^2 + 9130^2 .

It is a cyclic number.

It is not a de Polignac number, because 921054149 - 2¹⁶ = 920988613 is a prime.

It is a super-2 number, since 2×921054149² = 1696681490780228402, which contains 22 as substring.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (921054139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460527074 + 460527075.

It is an arithmetic number, because the mean of its divisors is an integer number (460527075).

Almost surely, 2^921054149 is an apocalyptic number.

It is an amenable number.

921054149 is a deficient number, since it is larger than the sum of its proper divisors (1).

921054149 is an equidigital number, since it uses as much as digits as its factorization.

921054149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 921054149 is about 30348.8739329814. The cubic root of 921054149 is about 972.9601531045.

The spelling of 921054149 in words is "nine hundred twenty-one million, fifty-four thousand, one hundred forty-nine".