89742943999 has 2 divisors, whose sum is σ = 89742944000. Its totient is φ = 89742943998.

The previous prime is 89742943957. The next prime is 89742944003. The reversal of 89742943999 is 99934924798.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 89742943999 - 2⁹ = 89742943487 is a prime.

It is a super-2 number, since 2×89742943999² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89742943909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44871471999 + 44871472000.

It is an arithmetic number, because the mean of its divisors is an integer number (44871472000).

Almost surely, 2^89742943999 is an apocalyptic number.

89742943999 is a deficient number, since it is larger than the sum of its proper divisors (1).

89742943999 is an equidigital number, since it uses as much as digits as its factorization.

89742943999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 317447424, while the sum is 73.

The spelling of 89742943999 in words is "eighty-nine billion, seven hundred forty-two million, nine hundred forty-three thousand, nine hundred ninety-nine".