89459531478 has 48 divisors (see below), whose sum is σ = 200618411136. Its totient is φ = 28780479360.

The previous prime is 89459531461. The next prime is 89459531479. The reversal of 89459531478 is 87413595498.

89459531478 is a `hidden beast` number, since 8 + 9 + 4 + 59 + 531 + 47 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89459531479) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6775 + ... + 423042.

It is an arithmetic number, because the mean of its divisors is an integer number (4179550232).

Almost surely, 2^89459531478 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 89459531478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100309205568).

89459531478 is an abundant number, since it is smaller than the sum of its proper divisors (111158879658).

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

89459531478 is a wasteful number, since it uses less digits than its factorization.

89459531478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430229 (or 430226 counting only the distinct ones).

The product of its digits is 43545600, while the sum is 63.

The spelling of 89459531478 in words is "eighty-nine billion, four hundred fifty-nine million, five hundred thirty-one thousand, four hundred seventy-eight".