43491798 has 96 divisors (see below), whose sum is σ = 116663040. Its totient is φ = 11430720.

The previous prime is 43491787. The next prime is 43491803. The reversal of 43491798 is 89719434.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 88333 + ... + 88823.

It is an arithmetic number, because the mean of its divisors is an integer number (1215240).

Almost surely, 2^43491798 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43491798, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58331520).

43491798 is an abundant number, since it is smaller than the sum of its proper divisors (73171242).

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

43491798 is a wasteful number, since it uses less digits than its factorization.

43491798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562 (or 559 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 43491798 is about 6594.8311578084. The cubic root of 43491798 is about 351.6703773358.

The spelling of 43491798 in words is "forty-three million, four hundred ninety-one thousand, seven hundred ninety-eight".