972192401 has 4 divisors (see below), whose sum is σ = 975259572. Its totient is φ = 969125232.

The previous prime is 972192373. The next prime is 972192503. The reversal of 972192401 is 104291279.

It is a Cunningham number, because it is equal to 31180²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 104291279 = 29 ⋅3596251.

It can be written as a sum of positive squares in 2 ways, for example, as 54405376 + 917787025 = 7376^2 + 30295^2 .

It is a cyclic number.

It is not a de Polignac number, because 972192401 - 2¹⁰ = 972191377 is a prime.

It is a super-3 number, since 3×972192401³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (972192601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1533110 + ... + 1533743.

It is an arithmetic number, because the mean of its divisors is an integer number (243814893).

Almost surely, 2^972192401 is an apocalyptic number.

It is an amenable number.

972192401 is a deficient number, since it is larger than the sum of its proper divisors (3067171).

972192401 is a wasteful number, since it uses less digits than its factorization.

972192401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3067170.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 972192401 is about 31180.0000160359. Note that the first 4 decimals coincide. The cubic root of 972192401 is about 990.6435298322.

The spelling of 972192401 in words is "nine hundred seventy-two million, one hundred ninety-two thousand, four hundred one".