9897922654 has 4 divisors (see below), whose sum is σ = 14846883984. Its totient is φ = 4948961326.

The previous prime is 9897922549. The next prime is 9897922667. The reversal of 9897922654 is 4562297989.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 9897922592 and 9897922601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2474480662 + ... + 2474480665.

It is an arithmetic number, because the mean of its divisors is an integer number (3711720996).

Almost surely, 2^9897922654 is an apocalyptic number.

9897922654 is a deficient number, since it is larger than the sum of its proper divisors (4948961330).

9897922654 is a wasteful number, since it uses less digits than its factorization.

9897922654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4948961329.

The product of its digits is 19595520, while the sum is 61.

The square root of 9897922654 is about 99488.3041065632. The cubic root of 9897922654 is about 2147.0789720509.

The spelling of 9897922654 in words is "nine billion, eight hundred ninety-seven million, nine hundred twenty-two thousand, six hundred fifty-four".