90214889671 has 2 divisors, whose sum is σ = 90214889672. Its totient is φ = 90214889670.

The previous prime is 90214889603. The next prime is 90214889717. The reversal of 90214889671 is 17698841209.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90214889671 - 2¹⁵ = 90214856903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90214889371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45107444835 + 45107444836.

It is an arithmetic number, because the mean of its divisors is an integer number (45107444836).

Almost surely, 2^90214889671 is an apocalyptic number.

90214889671 is a deficient number, since it is larger than the sum of its proper divisors (1).

90214889671 is an equidigital number, since it uses as much as digits as its factorization.

90214889671 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1741824, while the sum is 55.

The spelling of 90214889671 in words is "ninety billion, two hundred fourteen million, eight hundred eighty-nine thousand, six hundred seventy-one".