921434113 has 2 divisors, whose sum is σ = 921434114. Its totient is φ = 921434112.

The previous prime is 921434071. The next prime is 921434191. The reversal of 921434113 is 311434129.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 494929009 + 426505104 = 22247^2 + 20652^2 .

It is an emirp because it is prime and its reverse (311434129) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 921434113 - 2¹⁷ = 921303041 is a prime.

It is not a weakly prime, because it can be changed into another prime (921435113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460717056 + 460717057.

It is an arithmetic number, because the mean of its divisors is an integer number (460717057).

Almost surely, 2^921434113 is an apocalyptic number.

It is an amenable number.

921434113 is a deficient number, since it is larger than the sum of its proper divisors (1).

921434113 is an equidigital number, since it uses as much as digits as its factorization.

921434113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 28.

The square root of 921434113 is about 30355.1332232293. The cubic root of 921434113 is about 973.0939270009.

The spelling of 921434113 in words is "nine hundred twenty-one million, four hundred thirty-four thousand, one hundred thirteen".