972239 has 4 divisors (see below), whose sum is σ = 975624. Its totient is φ = 968856.

The previous prime is 972229. The next prime is 972259. The reversal of 972239 is 932279.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 932279 = 79 ⋅11801.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-972239 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 (972229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1217 + ... + 1850.

It is an arithmetic number, because the mean of its divisors is an integer number (243906).

2⁹⁷²²³⁹ is an apocalyptic number.

972239 is a deficient number, since it is larger than the sum of its proper divisors (3385).

972239 is a wasteful number, since it uses less digits than its factorization.

972239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3384.

The product of its digits is 6804, while the sum is 32.

The square root of 972239 is about 986.0218050327. The cubic root of 972239 is about 99.0659357378.

The spelling of 972239 in words is "nine hundred seventy-two thousand, two hundred thirty-nine".