972399 has 8 divisors (see below), whose sum is σ = 1341360. Its totient is φ = 625856.

The previous prime is 972373. The next prime is 972403. The reversal of 972399 is 993279.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 972399 - 2⁷ = 972271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (972319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5502 + ... + 5675.

It is an arithmetic number, because the mean of its divisors is an integer number (167670).

2⁹⁷²³⁹⁹ is an apocalyptic number.

972399 is a deficient number, since it is larger than the sum of its proper divisors (368961).

972399 is a wasteful number, since it uses less digits than its factorization.

972399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11209.

The product of its digits is 30618, while the sum is 39.

The square root of 972399 is about 986.1029358034. The cubic root of 972399 is about 99.0713698202.

The spelling of 972399 in words is "nine hundred seventy-two thousand, three hundred ninety-nine".