9923658394 has 16 divisors (see below), whose sum is σ = 16186165632. Its totient is φ = 4535681328.

The previous prime is 9923658389. The next prime is 9923658401. The reversal of 9923658394 is 4938563299.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1850134 + ... + 1855489.

It is an arithmetic number, because the mean of its divisors is an integer number (1011635352).

Almost surely, 2^9923658394 is an apocalyptic number.

9923658394 is a deficient number, since it is larger than the sum of its proper divisors (6262507238).

9923658394 is a wasteful number, since it uses less digits than its factorization.

9923658394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3705741.

The product of its digits is 12597120, while the sum is 58.

The square root of 9923658394 is about 99617.5606707974. The cubic root of 9923658394 is about 2148.9382458244.

The spelling of 9923658394 in words is "nine billion, nine hundred twenty-three million, six hundred fifty-eight thousand, three hundred ninety-four".