9915974 has 4 divisors (see below), whose sum is σ = 14873964. Its totient is φ = 4957986.

The previous prime is 9915949. The next prime is 9915979. The reversal of 9915974 is 4795199.

9915974 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9915979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2478992 + ... + 2478995.

It is an arithmetic number, because the mean of its divisors is an integer number (3718491).

Almost surely, 2^9915974 is an apocalyptic number.

9915974 is a deficient number, since it is larger than the sum of its proper divisors (4957990).

9915974 is a wasteful number, since it uses less digits than its factorization.

9915974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4957989.

The product of its digits is 102060, while the sum is 44.

The square root of 9915974 is about 3148.9639566054. The cubic root of 9915974 is about 214.8383425156.

The spelling of 9915974 in words is "nine million, nine hundred fifteen thousand, nine hundred seventy-four".