424100389 has 2 divisors, whose sum is σ = 424100390. Its totient is φ = 424100388.

The previous prime is 424100359. The next prime is 424100399. The reversal of 424100389 is 983001424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 417875364 + 6225025 = 20442^2 + 2495^2 .

It is a cyclic number.

It is not a de Polignac number, because 424100389 - 2¹¹ = 424098341 is a prime.

It is a super-2 number, since 2×424100389² = 359722279899902642, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 424100389.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (424100359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212050194 + 212050195.

It is an arithmetic number, because the mean of its divisors is an integer number (212050195).

Almost surely, 2^424100389 is an apocalyptic number.

It is an amenable number.

424100389 is a deficient number, since it is larger than the sum of its proper divisors (1).

424100389 is an equidigital number, since it uses as much as digits as its factorization.

424100389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 424100389 is about 20593.6977981129. The cubic root of 424100389 is about 751.3164370099.

The spelling of 424100389 in words is "four hundred twenty-four million, one hundred thousand, three hundred eighty-nine".