90629171 has 2 divisors, whose sum is σ = 90629172. Its totient is φ = 90629170.

The previous prime is 90629167. The next prime is 90629173. The reversal of 90629171 is 17192609.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90629171 - 2² = 90629167 is a prime.

It is a super-2 number, since 2×90629171² = 16427293272294482, which contains 22 as substring.

Together with 90629173, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (90629173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45314585 + 45314586.

It is an arithmetic number, because the mean of its divisors is an integer number (45314586).

Almost surely, 2^90629171 is an apocalyptic number.

90629171 is a deficient number, since it is larger than the sum of its proper divisors (1).

90629171 is an equidigital number, since it uses as much as digits as its factorization.

90629171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 35.

The square root of 90629171 is about 9519.9354514618. The cubic root of 90629171 is about 449.1823357542.

The spelling of 90629171 in words is "ninety million, six hundred twenty-nine thousand, one hundred seventy-one".