90099511 has 2 divisors, whose sum is σ = 90099512. Its totient is φ = 90099510.

The previous prime is 90099481. The next prime is 90099521. The reversal of 90099511 is 11599009.

It is a strong prime.

It is an emirp because it is prime and its reverse (11599009) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90099511 - 2⁹ = 90098999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90099521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45049755 + 45049756.

It is an arithmetic number, because the mean of its divisors is an integer number (45049756).

Almost surely, 2^90099511 is an apocalyptic number.

90099511 is a deficient number, since it is larger than the sum of its proper divisors (1).

90099511 is an equidigital number, since it uses as much as digits as its factorization.

90099511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3645, while the sum is 34.

The square root of 90099511 is about 9492.0762217757. The cubic root of 90099511 is about 448.3055801409.

The spelling of 90099511 in words is "ninety million, ninety-nine thousand, five hundred eleven".