90063893 has 2 divisors, whose sum is σ = 90063894. Its totient is φ = 90063892.

The previous prime is 90063889. The next prime is 90063917. The reversal of 90063893 is 39836009.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89548369 + 515524 = 9463^2 + 718^2 .

It is a cyclic number.

It is not a de Polignac number, because 90063893 - 2² = 90063889 is a prime.

It is a super-2 number, since 2×90063893² = 16223009644630898, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90063833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45031946 + 45031947.

It is an arithmetic number, because the mean of its divisors is an integer number (45031947).

Almost surely, 2^90063893 is an apocalyptic number.

It is an amenable number.

90063893 is a deficient number, since it is larger than the sum of its proper divisors (1).

90063893 is an equidigital number, since it uses as much as digits as its factorization.

90063893 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 90063893 is about 9490.1998398348. The cubic root of 90063893 is about 448.2464978641.

The spelling of 90063893 in words is "ninety million, sixty-three thousand, eight hundred ninety-three".