40989365198209 has 4 divisors (see below), whose sum is σ = 42311602785280. Its totient is φ = 39667127611140.

The previous prime is 40989365198167. The next prime is 40989365198213. The reversal of 40989365198209 is 90289156398904.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40989365198209 - 2¹³ = 40989365190017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40989360198209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 661118793489 + ... + 661118793550.

It is an arithmetic number, because the mean of its divisors is an integer number (10577900696320).

Almost surely, 2^{40989365198209} is an apocalyptic number.

It is an amenable number.

40989365198209 is a deficient number, since it is larger than the sum of its proper divisors (1322237587071).

40989365198209 is a wasteful number, since it uses less digits than its factorization.

40989365198209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1322237587070.

The product of its (nonzero) digits is 302330880, while the sum is 73.

The spelling of 40989365198209 in words is "forty trillion, nine hundred eighty-nine billion, three hundred sixty-five million, one hundred ninety-eight thousand, two hundred nine".