90079393 has 2 divisors, whose sum is σ = 90079394. Its totient is φ = 90079392.

The previous prime is 90079357. The next prime is 90079421. The reversal of 90079393 is 39397009.

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., 83484769 + 6594624 = 9137^2 + 2568^2 .

It is an emirp because it is prime and its reverse (39397009) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90079393 - 2¹⁷ = 89948321 is a prime.

It is a super-2 number, since 2×90079393² = 16228594086496898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (90079313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45039696 + 45039697.

It is an arithmetic number, because the mean of its divisors is an integer number (45039697).

Almost surely, 2^90079393 is an apocalyptic number.

It is an amenable number.

90079393 is a deficient number, since it is larger than the sum of its proper divisors (1).

90079393 is an equidigital number, since it uses as much as digits as its factorization.

90079393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45927, while the sum is 40.

The square root of 90079393 is about 9491.0164366099. The cubic root of 90079393 is about 448.2722108032.

The spelling of 90079393 in words is "ninety million, seventy-nine thousand, three hundred ninety-three".