88211491 has 4 divisors (see below), whose sum is σ = 88231984. Its totient is φ = 88191000.

The previous prime is 88211483. The next prime is 88211507. The reversal of 88211491 is 19411288.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 88211491 - 2³ = 88211483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (88211401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1020 + ... + 13321.

It is an arithmetic number, because the mean of its divisors is an integer number (22057996).

Almost surely, 2^88211491 is an apocalyptic number.

88211491 is a deficient number, since it is larger than the sum of its proper divisors (20493).

88211491 is a wasteful number, since it uses less digits than its factorization.

88211491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20492.

The product of its digits is 4608, while the sum is 34.

The square root of 88211491 is about 9392.0972631250. The cubic root of 88211491 is about 445.1520601409.

The spelling of 88211491 in words is "eighty-eight million, two hundred eleven thousand, four hundred ninety-one".