972241491 has 16 divisors (see below), whose sum is σ = 1408399776. Its totient is φ = 593005056.

The previous prime is 972241463. The next prime is 972241493. The reversal of 972241491 is 194142279.

It is not a de Polignac number, because 972241491 - 2⁶ = 972241427 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (972241493) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105900 + ... + 114713.

It is an arithmetic number, because the mean of its divisors is an integer number (88024986).

Almost surely, 2^972241491 is an apocalyptic number.

972241491 is a deficient number, since it is larger than the sum of its proper divisors (436158285).

972241491 is a wasteful number, since it uses less digits than its factorization.

972241491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220742.

The product of its digits is 36288, while the sum is 39.

The square root of 972241491 is about 31180.7872094340. The cubic root of 972241491 is about 990.6602034427.

The spelling of 972241491 in words is "nine hundred seventy-two million, two hundred forty-one thousand, four hundred ninety-one".