90141091 has 2 divisors, whose sum is σ = 90141092. Its totient is φ = 90141090.

The previous prime is 90141061. The next prime is 90141127. The reversal of 90141091 is 19014109.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90141091 - 2¹⁹ = 89616803 is a prime.

It is equal to p_5224714 and since 90141091 and 5224714 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (90141061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45070545 + 45070546.

It is an arithmetic number, because the mean of its divisors is an integer number (45070546).

Almost surely, 2^90141091 is an apocalyptic number.

90141091 is a deficient number, since it is larger than the sum of its proper divisors (1).

90141091 is an equidigital number, since it uses as much as digits as its factorization.

90141091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 25.

The square root of 90141091 is about 9494.2662170386. The cubic root of 90141091 is about 448.3745323438.

The spelling of 90141091 in words is "ninety million, one hundred forty-one thousand, ninety-one".