43940998797 has 36 divisors (see below), whose sum is σ = 60779611872. Its totient is φ = 28231912800.

The previous prime is 43940998789. The next prime is 43940998811. The reversal of 43940998797 is 79789904934.

It is not a de Polignac number, because 43940998797 - 2³ = 43940998789 is a prime.

It is a super-2 number, since 2×43940998797² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43940991797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 162143772 + ... + 162144042.

It is an arithmetic number, because the mean of its divisors is an integer number (1688322552).

Almost surely, 2^43940998797 is an apocalyptic number.

It is an amenable number.

43940998797 is a deficient number, since it is larger than the sum of its proper divisors (16838613075).

43940998797 is an frugal number, since it uses more digits than its factorization.

43940998797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722 (or 398 counting only the distinct ones).

The product of its (nonzero) digits is 123451776, while the sum is 69.

The spelling of 43940998797 in words is "forty-three billion, nine hundred forty million, nine hundred ninety-eight thousand, seven hundred ninety-seven".