9974981 has 4 divisors (see below), whose sum is σ = 10500000. Its totient is φ = 9449964.

The previous prime is 9974977. The next prime is 9974983. The reversal of 9974981 is 1894799.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1894799 = 251 ⋅7549.

It is a cyclic number.

It is not a de Polignac number, because 9974981 - 2² = 9974977 is a prime.

It is a super-2 number, since 2×9974981² = 199000491900722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9974983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 262481 + ... + 262518.

It is an arithmetic number, because the mean of its divisors is an integer number (2625000).

Almost surely, 2^9974981 is an apocalyptic number.

It is an amenable number.

9974981 is a deficient number, since it is larger than the sum of its proper divisors (525019).

9974981 is a wasteful number, since it uses less digits than its factorization.

9974981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525018.

The product of its digits is 163296, while the sum is 47.

The square root of 9974981 is about 3158.3193315433. The cubic root of 9974981 is about 215.2636462819.

The spelling of 9974981 in words is "nine million, nine hundred seventy-four thousand, nine hundred eighty-one".