9913993457 has 8 divisors (see below), whose sum is σ = 10160720256. Its totient is φ = 9668758032.

The previous prime is 9913993429. The next prime is 9913993459. The reversal of 9913993457 is 7543993199.

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

It is a de Polignac number, because none of the positive numbers 2^k-9913993457 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9913993396 and 9913993405.

It is not an unprimeable number, because it can be changed into a prime (9913993459) 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, 359378 + ... + 385979.

It is an arithmetic number, because the mean of its divisors is an integer number (1270090032).

Almost surely, 2^9913993457 is an apocalyptic number.

It is an amenable number.

9913993457 is a deficient number, since it is larger than the sum of its proper divisors (246726799).

9913993457 is a wasteful number, since it uses less digits than its factorization.

9913993457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 745687.

The product of its digits is 8266860, while the sum is 59.

The square root of 9913993457 is about 99569.0386465592. The cubic root of 9913993457 is about 2148.2403815822.

The spelling of 9913993457 in words is "nine billion, nine hundred thirteen million, nine hundred ninety-three thousand, four hundred fifty-seven".