972345547 has 4 divisors (see below), whose sum is σ = 988826040. Its totient is φ = 955865056.

The previous prime is 972345523. The next prime is 972345593. The reversal of 972345547 is 745543279.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 972345547 - 2¹⁹ = 971821259 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 972345497 and 972345506.

It is not an unprimeable number, because it can be changed into a prime (972345047) 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, 8240158 + ... + 8240275.

It is an arithmetic number, because the mean of its divisors is an integer number (247206510).

Almost surely, 2^972345547 is an apocalyptic number.

972345547 is a deficient number, since it is larger than the sum of its proper divisors (16480493).

972345547 is a wasteful number, since it uses less digits than its factorization.

972345547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16480492.

The product of its digits is 1058400, while the sum is 46.

The square root of 972345547 is about 31182.4557564025. The cubic root of 972345547 is about 990.6955446145.

The spelling of 972345547 in words is "nine hundred seventy-two million, three hundred forty-five thousand, five hundred forty-seven".