89742393 has 12 divisors (see below), whose sum is σ = 139599460. Its totient is φ = 55226016.

The previous prime is 89742379. The next prime is 89742437. The reversal of 89742393 is 39324798.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 55308969 + 34433424 = 7437^2 + 5868^2 .

It is not a de Polignac number, because 89742393 - 2⁹ = 89741881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (89742313) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 383398 + ... + 383631.

Almost surely, 2^89742393 is an apocalyptic number.

It is an amenable number.

89742393 is a deficient number, since it is larger than the sum of its proper divisors (49857067).

89742393 is a wasteful number, since it uses less digits than its factorization.

89742393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 767048 (or 767045 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 89742393 is about 9473.2461701362. The cubic root of 89742393 is about 447.7124952336.

The spelling of 89742393 in words is "eighty-nine million, seven hundred forty-two thousand, three hundred ninety-three".