9972194 has 4 divisors (see below), whose sum is σ = 14958294. Its totient is φ = 4986096.

The previous prime is 9972187. The next prime is 9972199. The reversal of 9972194 is 4912799.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4912799 = 1321 ⋅3719.

It can be written as a sum of positive squares in only one way, i.e., 7912969 + 2059225 = 2813^2 + 1435^2 .

It is not an unprimeable number, because it can be changed into a prime (9972199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2493047 + ... + 2493050.

Almost surely, 2^9972194 is an apocalyptic number.

9972194 is a deficient number, since it is larger than the sum of its proper divisors (4986100).

9972194 is a wasteful number, since it uses less digits than its factorization.

9972194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4986099.

The product of its digits is 40824, while the sum is 41.

The square root of 9972194 is about 3157.8780850438. The cubic root of 9972194 is about 215.2435962632.

The spelling of 9972194 in words is "nine million, nine hundred seventy-two thousand, one hundred ninety-four".