88722091 has 2 divisors, whose sum is σ = 88722092. Its totient is φ = 88722090.

The previous prime is 88722071. The next prime is 88722119. The reversal of 88722091 is 19022788.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 88722091 - 2⁵ = 88722059 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 88722091.

It is not a weakly prime, because it can be changed into another prime (88722071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44361045 + 44361046.

It is an arithmetic number, because the mean of its divisors is an integer number (44361046).

Almost surely, 2^88722091 is an apocalyptic number.

88722091 is a deficient number, since it is larger than the sum of its proper divisors (1).

88722091 is an equidigital number, since it uses as much as digits as its factorization.

88722091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 88722091 is about 9419.2404683180. The cubic root of 88722091 is about 446.0093085927.

The spelling of 88722091 in words is "eighty-eight million, seven hundred twenty-two thousand, ninety-one".