9993997654 has 8 divisors (see below), whose sum is σ = 14994400608. Its totient is φ = 4995864120.

The previous prime is 9993997639. The next prime is 9993997667. The reversal of 9993997654 is 4567993999.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 556302 + ... + 573985.

It is an arithmetic number, because the mean of its divisors is an integer number (1874300076).

Almost surely, 2^9993997654 is an apocalyptic number.

9993997654 is a deficient number, since it is larger than the sum of its proper divisors (5000402954).

9993997654 is a wasteful number, since it uses less digits than its factorization.

9993997654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1134710.

The product of its digits is 148803480, while the sum is 70.

The square root of 9993997654 is about 99969.9837651282. The cubic root of 9993997654 is about 2154.0035483435.

The spelling of 9993997654 in words is "nine billion, nine hundred ninety-three million, nine hundred ninety-seven thousand, six hundred fifty-four".