972489943 has 2 divisors, whose sum is σ = 972489944. Its totient is φ = 972489942.

The previous prime is 972489923. The next prime is 972489961. The reversal of 972489943 is 349984279.

It is a strong prime.

It is an emirp because it is prime and its reverse (349984279) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-972489943 is a prime.

It is a super-2 number, since 2×972489943² = 1891473378472286498, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (972489923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 486244971 + 486244972.

It is an arithmetic number, because the mean of its divisors is an integer number (486244972).

Almost surely, 2^972489943 is an apocalyptic number.

972489943 is a deficient number, since it is larger than the sum of its proper divisors (1).

972489943 is an equidigital number, since it uses as much as digits as its factorization.

972489943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3919104, while the sum is 55.

The square root of 972489943 is about 31184.7710108636. The cubic root of 972489943 is about 990.7445825289.

The spelling of 972489943 in words is "nine hundred seventy-two million, four hundred eighty-nine thousand, nine hundred forty-three".