43890494 has 16 divisors (see below), whose sum is σ = 70339200. Its totient is φ = 20478744.

The previous prime is 43890479. The next prime is 43890499. The reversal of 43890494 is 49409834.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43890499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6074 + ... + 11165.

It is an arithmetic number, because the mean of its divisors is an integer number (4396200).

Almost surely, 2^43890494 is an apocalyptic number.

43890494 is a deficient number, since it is larger than the sum of its proper divisors (26448706).

43890494 is a wasteful number, since it uses less digits than its factorization.

43890494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17327.

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 43890494 is about 6624.9901132002. The cubic root of 43890494 is about 352.7417157416.

The spelling of 43890494 in words is "forty-three million, eight hundred ninety thousand, four hundred ninety-four".