972981249 has 4 divisors (see below), whose sum is σ = 1297308336. Its totient is φ = 648654164.

The previous prime is 972981199. The next prime is 972981257. The reversal of 972981249 is 942189279.

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.

It is a cyclic number.

It is not a de Polignac number, because 972981249 - 2¹¹ = 972979201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (972981299) 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, 162163539 + ... + 162163544.

It is an arithmetic number, because the mean of its divisors is an integer number (324327084).

Almost surely, 2^972981249 is an apocalyptic number.

It is an amenable number.

972981249 is a deficient number, since it is larger than the sum of its proper divisors (324327087).

972981249 is a wasteful number, since it uses less digits than its factorization.

972981249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324327086.

The product of its digits is 653184, while the sum is 51.

The square root of 972981249 is about 31192.6473547854. The cubic root of 972981249 is about 990.9113972138.

The spelling of 972981249 in words is "nine hundred seventy-two million, nine hundred eighty-one thousand, two hundred forty-nine".