43948090985 has 8 divisors (see below), whose sum is σ = 53249726400. Its totient is φ = 34817127984.

The previous prime is 43948090981. The next prime is 43948090993. The reversal of 43948090985 is 58909084934.

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 43948090985 - 2² = 43948090981 is a prime.

It is not an unprimeable number, because it can be changed into a prime (43948090981) 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, 42667535 + ... + 42668564.

It is an arithmetic number, because the mean of its divisors is an integer number (6656215800).

Almost surely, 2^43948090985 is an apocalyptic number.

It is an amenable number.

43948090985 is a deficient number, since it is larger than the sum of its proper divisors (9301635415).

43948090985 is a wasteful number, since it uses less digits than its factorization.

43948090985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85336207.

The product of its (nonzero) digits is 11197440, while the sum is 59.

Adding to 43948090985 its sum of digits (59), we get a square (43948091044 = 209638²).

The spelling of 43948090985 in words is "forty-three billion, nine hundred forty-eight million, ninety thousand, nine hundred eighty-five".