89143487 has 2 divisors, whose sum is σ = 89143488. Its totient is φ = 89143486.

The previous prime is 89143463. The next prime is 89143489. The reversal of 89143487 is 78434198.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 89143487 - 2¹⁸ = 88881343 is a prime.

It is a super-2 number, since 2×89143487² = 15893122549038338, which contains 22 as substring.

Together with 89143489, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89143489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44571743 + 44571744.

It is an arithmetic number, because the mean of its divisors is an integer number (44571744).

Almost surely, 2^89143487 is an apocalyptic number.

89143487 is a deficient number, since it is larger than the sum of its proper divisors (1).

89143487 is an equidigital number, since it uses as much as digits as its factorization.

89143487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 193536, while the sum is 44.

The square root of 89143487 is about 9441.5828651768. The cubic root of 89143487 is about 446.7143181384.

The spelling of 89143487 in words is "eighty-nine million, one hundred forty-three thousand, four hundred eighty-seven".