90800387 has 2 divisors, whose sum is σ = 90800388. Its totient is φ = 90800386.

The previous prime is 90800357. The next prime is 90800399. The reversal of 90800387 is 78300809.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90800387 - 2²² = 86606083 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (90800327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45400193 + 45400194.

It is an arithmetic number, because the mean of its divisors is an integer number (45400194).

Almost surely, 2^90800387 is an apocalyptic number.

90800387 is a deficient number, since it is larger than the sum of its proper divisors (1).

90800387 is an equidigital number, since it uses as much as digits as its factorization.

90800387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 90800387 is about 9528.9237062745. The cubic root of 90800387 is about 449.4650218616.

The spelling of 90800387 in words is "ninety million, eight hundred thousand, three hundred eighty-seven".