90823807 has 2 divisors, whose sum is σ = 90823808. Its totient is φ = 90823806.

The previous prime is 90823771. The next prime is 90823841. The reversal of 90823807 is 70832809.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90823807 - 2¹⁵ = 90791039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90823867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45411903 + 45411904.

It is an arithmetic number, because the mean of its divisors is an integer number (45411904).

Almost surely, 2^90823807 is an apocalyptic number.

90823807 is a deficient number, since it is larger than the sum of its proper divisors (1).

90823807 is an equidigital number, since it uses as much as digits as its factorization.

90823807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 90823807 is about 9530.1525171426. The cubic root of 90823807 is about 449.5036618068.

The spelling of 90823807 in words is "ninety million, eight hundred twenty-three thousand, eight hundred seven".