333421997 has 2 divisors, whose sum is σ = 333421998. Its totient is φ = 333421996.

The previous prime is 333421943. The next prime is 333422027. The reversal of 333421997 is 799124333.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 206611876 + 126810121 = 14374^2 + 11261^2 .

It is a cyclic number.

It is not a de Polignac number, because 333421997 - 2¹⁶ = 333356461 is a prime.

It is a super-2 number, since 2×333421997² = 222340456166936018, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (333421597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166710998 + 166710999.

It is an arithmetic number, because the mean of its divisors is an integer number (166710999).

Almost surely, 2^333421997 is an apocalyptic number.

It is an amenable number.

333421997 is a deficient number, since it is larger than the sum of its proper divisors (1).

333421997 is an equidigital number, since it uses as much as digits as its factorization.

333421997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 122472, while the sum is 41.

The square root of 333421997 is about 18259.8465765734. The cubic root of 333421997 is about 693.4227448537.

The spelling of 333421997 in words is "three hundred thirty-three million, four hundred twenty-one thousand, nine hundred ninety-seven".