90933769 has 2 divisors, whose sum is σ = 90933770. Its totient is φ = 90933768.

The previous prime is 90933751. The next prime is 90933797. The reversal of 90933769 is 96733909.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90478144 + 455625 = 9512^2 + 675^2 .

It is an emirp because it is prime and its reverse (96733909) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90933769 - 2¹⁵ = 90901001 is a prime.

It is a super-2 number, since 2×90933769² = 16537900689090722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (90933709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45466884 + 45466885.

It is an arithmetic number, because the mean of its divisors is an integer number (45466885).

Almost surely, 2^90933769 is an apocalyptic number.

It is an amenable number.

90933769 is a deficient number, since it is larger than the sum of its proper divisors (1).

90933769 is an equidigital number, since it uses as much as digits as its factorization.

90933769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 275562, while the sum is 46.

The square root of 90933769 is about 9535.9199346471. The cubic root of 90933769 is about 449.6849960068.

The spelling of 90933769 in words is "ninety million, nine hundred thirty-three thousand, seven hundred sixty-nine".