90878383 has 2 divisors, whose sum is σ = 90878384. Its totient is φ = 90878382.

The previous prime is 90878377. The next prime is 90878399. The reversal of 90878383 is 38387809.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90878383 - 2¹³ = 90870191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90878363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45439191 + 45439192.

It is an arithmetic number, because the mean of its divisors is an integer number (45439192).

Almost surely, 2^90878383 is an apocalyptic number.

90878383 is a deficient number, since it is larger than the sum of its proper divisors (1).

90878383 is an equidigital number, since it uses as much as digits as its factorization.

90878383 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 90878383 is about 9533.0154201071. The cubic root of 90878383 is about 449.5936793199.

The spelling of 90878383 in words is "ninety million, eight hundred seventy-eight thousand, three hundred eighty-three".