332421409 has 2 divisors, whose sum is σ = 332421410. Its totient is φ = 332421408.

The previous prime is 332421389. The next prime is 332421413. The reversal of 332421409 is 904124233.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 329531409 + 2890000 = 18153^2 + 1700^2 .

It is a cyclic number.

It is not a de Polignac number, because 332421409 - 2²¹ = 330324257 is a prime.

It is a super-2 number, since 2×332421409² = 221007986323090562, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (332421449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166210704 + 166210705.

It is an arithmetic number, because the mean of its divisors is an integer number (166210705).

Almost surely, 2^332421409 is an apocalyptic number.

It is an amenable number.

332421409 is a deficient number, since it is larger than the sum of its proper divisors (1).

332421409 is an equidigital number, since it uses as much as digits as its factorization.

332421409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 332421409 is about 18232.4274028446. The cubic root of 332421409 is about 692.7284038514.

The spelling of 332421409 in words is "three hundred thirty-two million, four hundred twenty-one thousand, four hundred nine".