89856493 has 2 divisors, whose sum is σ = 89856494. Its totient is φ = 89856492.

The previous prime is 89856463. The next prime is 89856499. The reversal of 89856493 is 39465898.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87366409 + 2490084 = 9347^2 + 1578^2 .

It is a cyclic number.

It is not a de Polignac number, because 89856493 - 2²¹ = 87759341 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 89856493.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89856499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44928246 + 44928247.

It is an arithmetic number, because the mean of its divisors is an integer number (44928247).

Almost surely, 2^89856493 is an apocalyptic number.

It is an amenable number.

89856493 is a deficient number, since it is larger than the sum of its proper divisors (1).

89856493 is an equidigital number, since it uses as much as digits as its factorization.

89856493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1866240, while the sum is 52.

The square root of 89856493 is about 9479.2664800606. The cubic root of 89856493 is about 447.9021579619.

The spelling of 89856493 in words is "eighty-nine million, eight hundred fifty-six thousand, four hundred ninety-three".