972489901 has 4 divisors (see below), whose sum is σ = 1023673600. Its totient is φ = 921306204.

The previous prime is 972489899. The next prime is 972489919. The reversal of 972489901 is 109984279.

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 972489901 - 2¹ = 972489899 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (972489961) 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, 25591821 + ... + 25591858.

It is an arithmetic number, because the mean of its divisors is an integer number (255918400).

Almost surely, 2^972489901 is an apocalyptic number.

It is an amenable number.

972489901 is a deficient number, since it is larger than the sum of its proper divisors (51183699).

972489901 is a wasteful number, since it uses less digits than its factorization.

972489901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51183698.

The product of its (nonzero) digits is 326592, while the sum is 49.

The square root of 972489901 is about 31184.7703374580. The cubic root of 972489901 is about 990.7445682662.

The spelling of 972489901 in words is "nine hundred seventy-two million, four hundred eighty-nine thousand, nine hundred one".