934213921 has 2 divisors, whose sum is σ = 934213922. Its totient is φ = 934213920.

The previous prime is 934213913. The next prime is 934213927. The reversal of 934213921 is 129312439.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 559984896 + 374229025 = 23664^2 + 19345^2 .

It is a cyclic number.

It is not a de Polignac number, because 934213921 - 2³ = 934213913 is a prime.

It is not a weakly prime, because it can be changed into another prime (934213927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 467106960 + 467106961.

It is an arithmetic number, because the mean of its divisors is an integer number (467106961).

Almost surely, 2^934213921 is an apocalyptic number.

It is an amenable number.

934213921 is a deficient number, since it is larger than the sum of its proper divisors (1).

934213921 is an equidigital number, since it uses as much as digits as its factorization.

934213921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 34.

The square root of 934213921 is about 30564.9132339681. The cubic root of 934213921 is about 977.5720547875.

The spelling of 934213921 in words is "nine hundred thirty-four million, two hundred thirteen thousand, nine hundred twenty-one".