88494389491 has 4 divisors (see below), whose sum is σ = 93699941832. Its totient is φ = 83288837152.

The previous prime is 88494389479. The next prime is 88494389507. The reversal of 88494389491 is 19498349488.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-88494389491 is a prime.

It is a super-2 number, since 2×88494389491² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (88494389891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2602776145 + ... + 2602776178.

It is an arithmetic number, because the mean of its divisors is an integer number (23424985458).

Almost surely, 2^88494389491 is an apocalyptic number.

88494389491 is a deficient number, since it is larger than the sum of its proper divisors (5205552341).

88494389491 is a wasteful number, since it uses less digits than its factorization.

88494389491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5205552340.

The product of its digits is 71663616, while the sum is 67.

The spelling of 88494389491 in words is "eighty-eight billion, four hundred ninety-four million, three hundred eighty-nine thousand, four hundred ninety-one".