43490263 has 8 divisors (see below), whose sum is σ = 46238688. Its totient is φ = 40813344.

The previous prime is 43490203. The next prime is 43490273. The reversal of 43490263 is 36209434.

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

It is a cyclic number.

It is not a de Polignac number, because 43490263 - 2²⁵ = 9935831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43490203) 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, 16620 + ... + 19057.

It is an arithmetic number, because the mean of its divisors is an integer number (5779836).

Almost surely, 2^43490263 is an apocalyptic number.

43490263 is a deficient number, since it is larger than the sum of its proper divisors (2748425).

43490263 is a wasteful number, since it uses less digits than its factorization.

43490263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35753.

The product of its (nonzero) digits is 15552, while the sum is 31.

The square root of 43490263 is about 6594.7147777595. The cubic root of 43490263 is about 351.6662400011. Note that the first 3 decimals are identical.

Adding to 43490263 its reverse (36209434), we get a palindrome (79699697).

The spelling of 43490263 in words is "forty-three million, four hundred ninety thousand, two hundred sixty-three".