354646421 has 2 divisors, whose sum is σ = 354646422. Its totient is φ = 354646420.

The previous prime is 354646403. The next prime is 354646429. The reversal of 354646421 is 124646453.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 290020900 + 64625521 = 17030^2 + 8039^2 .

It is a cyclic number.

It is not a de Polignac number, because 354646421 - 2¹⁰ = 354645397 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 (354646429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177323210 + 177323211.

It is an arithmetic number, because the mean of its divisors is an integer number (177323211).

Almost surely, 2^354646421 is an apocalyptic number.

It is an amenable number.

354646421 is a deficient number, since it is larger than the sum of its proper divisors (1).

354646421 is an equidigital number, since it uses as much as digits as its factorization.

354646421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69120, while the sum is 35.

The square root of 354646421 is about 18832.0583314730. The cubic root of 354646421 is about 707.8347184858.

The spelling of 354646421 in words is "three hundred fifty-four million, six hundred forty-six thousand, four hundred twenty-one".