89644487738 has 8 divisors (see below), whose sum is σ = 144810326388. Its totient is φ = 41374378944.

The previous prime is 89644487707. The next prime is 89644487759. The reversal of 89644487738 is 83778444698.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 87813246889 + 1831240849 = 296333^2 + 42793^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×89644487738² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1723932431 + ... + 1723932482.

Almost surely, 2^89644487738 is an apocalyptic number.

89644487738 is a deficient number, since it is larger than the sum of its proper divisors (55165838650).

89644487738 is a wasteful number, since it uses less digits than its factorization.

89644487738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3447864928.

The product of its digits is 260112384, while the sum is 68.

The spelling of 89644487738 in words is "eighty-nine billion, six hundred forty-four million, four hundred eighty-seven thousand, seven hundred thirty-eight".