972100439 has 6 divisors (see below), whose sum is σ = 1025956800. Its totient is φ = 920936916.

The previous prime is 972100433. The next prime is 972100469. The reversal of 972100439 is 934001279.

It is a de Polignac number, because none of the positive numbers 2^k-972100439 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 972100399 and 972100408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (972100433) 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 5 ways as a sum of consecutive naturals, for example, 1346039 + ... + 1346760.

It is an arithmetic number, because the mean of its divisors is an integer number (170992800).

Almost surely, 2^972100439 is an apocalyptic number.

972100439 is a deficient number, since it is larger than the sum of its proper divisors (53856361).

972100439 is a wasteful number, since it uses less digits than its factorization.

972100439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2692837 (or 2692818 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 972100439 is about 31178.5252858438. The cubic root of 972100439 is about 990.6122930684.

The spelling of 972100439 in words is "nine hundred seventy-two million, one hundred thousand, four hundred thirty-nine".