356934421 has 2 divisors, whose sum is σ = 356934422. Its totient is φ = 356934420.

The previous prime is 356934379. The next prime is 356934427. The reversal of 356934421 is 124439653.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 303804900 + 53129521 = 17430^2 + 7289^2 .

It is a cyclic number.

It is not a de Polignac number, because 356934421 - 2¹⁵ = 356901653 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (356934427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 178467210 + 178467211.

It is an arithmetic number, because the mean of its divisors is an integer number (178467211).

Almost surely, 2^356934421 is an apocalyptic number.

It is an amenable number.

356934421 is a deficient number, since it is larger than the sum of its proper divisors (1).

356934421 is an equidigital number, since it uses as much as digits as its factorization.

356934421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 37.

The square root of 356934421 is about 18892.7081436199. The cubic root of 356934421 is about 709.3536543248.

The spelling of 356934421 in words is "three hundred fifty-six million, nine hundred thirty-four thousand, four hundred twenty-one".