88001891 has 2 divisors, whose sum is σ = 88001892. Its totient is φ = 88001890.

The previous prime is 88001831. The next prime is 88001909. The reversal of 88001891 is 19810088.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 88001891 - 2⁶ = 88001827 is a prime.

It is not a weakly prime, because it can be changed into another prime (88001831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44000945 + 44000946.

It is an arithmetic number, because the mean of its divisors is an integer number (44000946).

Almost surely, 2^88001891 is an apocalyptic number.

88001891 is a deficient number, since it is larger than the sum of its proper divisors (1).

88001891 is an equidigital number, since it uses as much as digits as its factorization.

88001891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 35.

The square root of 88001891 is about 9380.9323097441. The cubic root of 88001891 is about 444.7992041110.

The spelling of 88001891 in words is "eighty-eight million, one thousand, eight hundred ninety-one".