90419429 has 2 divisors, whose sum is σ = 90419430. Its totient is φ = 90419428.

The previous prime is 90419383. The next prime is 90419437. The reversal of 90419429 is 92491409.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47582404 + 42837025 = 6898^2 + 6545^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90419429 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 90419392 and 90419401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90419729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45209714 + 45209715.

It is an arithmetic number, because the mean of its divisors is an integer number (45209715).

Almost surely, 2^90419429 is an apocalyptic number.

It is an amenable number.

90419429 is a deficient number, since it is larger than the sum of its proper divisors (1).

90419429 is an equidigital number, since it uses as much as digits as its factorization.

90419429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 90419429 is about 9508.9131345280. The cubic root of 90419429 is about 448.8355556751.

The spelling of 90419429 in words is "ninety million, four hundred nineteen thousand, four hundred twenty-nine".