421229269 has 2 divisors, whose sum is σ = 421229270. Its totient is φ = 421229268.

The previous prime is 421229227. The next prime is 421229293. The reversal of 421229269 is 962922124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 389588644 + 31640625 = 19738^2 + 5625^2 .

It is a cyclic number.

It is not a de Polignac number, because 421229269 - 2¹⁹ = 420704981 is a prime.

It is a super-2 number, since 2×421229269² = 354868194124548722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421229219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210614634 + 210614635.

It is an arithmetic number, because the mean of its divisors is an integer number (210614635).

Almost surely, 2^421229269 is an apocalyptic number.

It is an amenable number.

421229269 is a deficient number, since it is larger than the sum of its proper divisors (1).

421229269 is an equidigital number, since it uses as much as digits as its factorization.

421229269 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 37.

The square root of 421229269 is about 20523.8707119296. The cubic root of 421229269 is about 749.6171491929.

The spelling of 421229269 in words is "four hundred twenty-one million, two hundred twenty-nine thousand, two hundred sixty-nine".