87089423 has 2 divisors, whose sum is σ = 87089424. Its totient is φ = 87089422.

The previous prime is 87089399. The next prime is 87089459. The reversal of 87089423 is 32498078.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87089423 - 2¹⁶ = 87023887 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87089473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43544711 + 43544712.

It is an arithmetic number, because the mean of its divisors is an integer number (43544712).

Almost surely, 2^87089423 is an apocalyptic number.

87089423 is a deficient number, since it is larger than the sum of its proper divisors (1).

87089423 is an equidigital number, since it uses as much as digits as its factorization.

87089423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 87089423 is about 9332.1713979116. The cubic root of 87089423 is about 443.2565253461.

The spelling of 87089423 in words is "eighty-seven million, eighty-nine thousand, four hundred twenty-three".