9940823654 has 16 divisors (see below), whose sum is σ = 15045931008. Its totient is φ = 4925603592.

The previous prime is 9940823639. The next prime is 9940823657. The reversal of 9940823654 is 4563280499.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9940823657) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203237 + ... + 247359.

It is an arithmetic number, because the mean of its divisors is an integer number (940370688).

Almost surely, 2^9940823654 is an apocalyptic number.

9940823654 is a deficient number, since it is larger than the sum of its proper divisors (5105107354).

9940823654 is a wasteful number, since it uses less digits than its factorization.

9940823654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45139.

The product of its (nonzero) digits is 1866240, while the sum is 50.

The square root of 9940823654 is about 99703.6792400361. The cubic root of 9940823654 is about 2150.1765605138.

The spelling of 9940823654 in words is "nine billion, nine hundred forty million, eight hundred twenty-three thousand, six hundred fifty-four".