424641389 has 2 divisors, whose sum is σ = 424641390. Its totient is φ = 424641388.

The previous prime is 424641367. The next prime is 424641397. The reversal of 424641389 is 983146424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 238455364 + 186186025 = 15442^2 + 13645^2 .

It is a cyclic number.

It is not a de Polignac number, because 424641389 - 2²⁴ = 407864173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (424641319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212320694 + 212320695.

It is an arithmetic number, because the mean of its divisors is an integer number (212320695).

Almost surely, 2^424641389 is an apocalyptic number.

It is an amenable number.

424641389 is a deficient number, since it is larger than the sum of its proper divisors (1).

424641389 is an equidigital number, since it uses as much as digits as its factorization.

424641389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 165888, while the sum is 41.

The square root of 424641389 is about 20606.8286982738. The cubic root of 424641389 is about 751.6357713719.

The spelling of 424641389 in words is "four hundred twenty-four million, six hundred forty-one thousand, three hundred eighty-nine".