89948289493 has 2 divisors, whose sum is σ = 89948289494. Its totient is φ = 89948289492.

The previous prime is 89948289463. The next prime is 89948289499. The reversal of 89948289493 is 39498284998.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63363965284 + 26584324209 = 251722^2 + 163047^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89948289493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89948289499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44974144746 + 44974144747.

It is an arithmetic number, because the mean of its divisors is an integer number (44974144747).

Almost surely, 2^89948289493 is an apocalyptic number.

It is an amenable number.

89948289493 is a deficient number, since it is larger than the sum of its proper divisors (1).

89948289493 is an equidigital number, since it uses as much as digits as its factorization.

89948289493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 322486272, while the sum is 73.

The spelling of 89948289493 in words is "eighty-nine billion, nine hundred forty-eight million, two hundred eighty-nine thousand, four hundred ninety-three".