9945974 has 4 divisors (see below), whose sum is σ = 14918964. Its totient is φ = 4972986.

The previous prime is 9945967. The next prime is 9945977. The reversal of 9945974 is 4795499.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4795499 = 613 ⋅7823.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9945977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2486492 + ... + 2486495.

It is an arithmetic number, because the mean of its divisors is an integer number (3729741).

Almost surely, 2^9945974 is an apocalyptic number.

9945974 is a deficient number, since it is larger than the sum of its proper divisors (4972990).

9945974 is a wasteful number, since it uses less digits than its factorization.

9945974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4972989.

The product of its digits is 408240, while the sum is 47.

The square root of 9945974 is about 3153.7238306485. The cubic root of 9945974 is about 215.0547832274.

The spelling of 9945974 in words is "nine million, nine hundred forty-five thousand, nine hundred seventy-four".