89722147 has 2 divisors, whose sum is σ = 89722148. Its totient is φ = 89722146.

The previous prime is 89722121. The next prime is 89722177. The reversal of 89722147 is 74122798.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89722147 is a prime.

It is not a weakly prime, because it can be changed into another prime (89722177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44861073 + 44861074.

It is an arithmetic number, because the mean of its divisors is an integer number (44861074).

Almost surely, 2^89722147 is an apocalyptic number.

89722147 is a deficient number, since it is larger than the sum of its proper divisors (1).

89722147 is an equidigital number, since it uses as much as digits as its factorization.

89722147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56448, while the sum is 40.

The square root of 89722147 is about 9472.1775215628. The cubic root of 89722147 is about 447.6788245286.

The spelling of 89722147 in words is "eighty-nine million, seven hundred twenty-two thousand, one hundred forty-seven".