89144436 has 12 divisors (see below), whose sum is σ = 208003712. Its totient is φ = 29714808.

The previous prime is 89144431. The next prime is 89144449. The reversal of 89144436 is 63444198.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 89144394 and 89144403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89144431) 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, 3714340 + ... + 3714363.

Almost surely, 2^89144436 is an apocalyptic number.

It is an amenable number.

89144436 is an abundant number, since it is smaller than the sum of its proper divisors (118859276).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

89144436 is a wasteful number, since it uses less digits than its factorization.

89144436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7428710 (or 7428708 counting only the distinct ones).

The product of its digits is 82944, while the sum is 39.

The square root of 89144436 is about 9441.6331214467. The cubic root of 89144436 is about 446.7159033370.

The spelling of 89144436 in words is "eighty-nine million, one hundred forty-four thousand, four hundred thirty-six".