89243239 has 2 divisors, whose sum is σ = 89243240. Its totient is φ = 89243238.

The previous prime is 89243221. The next prime is 89243249. The reversal of 89243239 is 93234298.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 89243239 - 2⁵ = 89243207 is a prime.

It is a super-2 number, since 2×89243239² = 15928711414422242, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89243249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44621619 + 44621620.

It is an arithmetic number, because the mean of its divisors is an integer number (44621620).

Almost surely, 2^89243239 is an apocalyptic number.

89243239 is a deficient number, since it is larger than the sum of its proper divisors (1).

89243239 is an equidigital number, since it uses as much as digits as its factorization.

89243239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 40.

The square root of 89243239 is about 9446.8639770032. The cubic root of 89243239 is about 446.8808811980.

The spelling of 89243239 in words is "eighty-nine million, two hundred forty-three thousand, two hundred thirty-nine".