90478027 has 2 divisors, whose sum is σ = 90478028. Its totient is φ = 90478026.

The previous prime is 90478007. The next prime is 90478033. The reversal of 90478027 is 72087409.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90478027 is a prime.

It is not a weakly prime, because it can be changed into another prime (90478007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45239013 + 45239014.

It is an arithmetic number, because the mean of its divisors is an integer number (45239014).

Almost surely, 2^90478027 is an apocalyptic number.

90478027 is a deficient number, since it is larger than the sum of its proper divisors (1).

90478027 is an equidigital number, since it uses as much as digits as its factorization.

90478027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 90478027 is about 9511.9938498719. The cubic root of 90478027 is about 448.9324934927.

The spelling of 90478027 in words is "ninety million, four hundred seventy-eight thousand, twenty-seven".