90424417 has 2 divisors, whose sum is σ = 90424418. Its totient is φ = 90424416.

The previous prime is 90424351. The next prime is 90424423. The reversal of 90424417 is 71442409.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83247376 + 7177041 = 9124^2 + 2679^2 .

It is a cyclic number.

It is not a de Polignac number, because 90424417 - 2¹¹ = 90422369 is a prime.

It is not a weakly prime, because it can be changed into another prime (90424487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45212208 + 45212209.

It is an arithmetic number, because the mean of its divisors is an integer number (45212209).

Almost surely, 2^90424417 is an apocalyptic number.

It is an amenable number.

90424417 is a deficient number, since it is larger than the sum of its proper divisors (1).

90424417 is an equidigital number, since it uses as much as digits as its factorization.

90424417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 90424417 is about 9509.1754111490. The cubic root of 90424417 is about 448.8438088813.

The spelling of 90424417 in words is "ninety million, four hundred twenty-four thousand, four hundred seventeen".