1994424269 has 2 divisors, whose sum is σ = 1994424270. Its totient is φ = 1994424268.

The previous prime is 1994424239. The next prime is 1994424353. The reversal of 1994424269 is 9624244991.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1296936169 + 697488100 = 36013^2 + 26410^2 .

It is a cyclic number.

It is not a de Polignac number, because 1994424269 - 2¹² = 1994420173 is a prime.

It is a super-2 number, since 2×1994424269² = 7955456329552368722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1994424239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 997212134 + 997212135.

It is an arithmetic number, because the mean of its divisors is an integer number (997212135).

Almost surely, 2^1994424269 is an apocalyptic number.

It is an amenable number.

1994424269 is a deficient number, since it is larger than the sum of its proper divisors (1).

1994424269 is an equidigital number, since it uses as much as digits as its factorization.

1994424269 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1119744, while the sum is 50.

The square root of 1994424269 is about 44658.9774737398. The cubic root of 1994424269 is about 1258.7491300250.

The spelling of 1994424269 in words is "one billion, nine hundred ninety-four million, four hundred twenty-four thousand, two hundred sixty-nine".