972381 has 8 divisors (see below), whose sum is σ = 1304064. Its totient is φ = 644480.

The previous prime is 972373. The next prime is 972403. The reversal of 972381 is 183279.

It is a happy number.

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 972381 - 2³ = 972373 is a prime.

It is a super-2 number, since 2×972381² = 1891049618322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 972381.

It is not an unprimeable number, because it can be changed into a prime (972481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 276 + ... + 1421.

It is an arithmetic number, because the mean of its divisors is an integer number (163008).

2⁹⁷²³⁸¹ is an apocalyptic number.

It is an amenable number.

972381 is a deficient number, since it is larger than the sum of its proper divisors (331683).

972381 is a wasteful number, since it uses less digits than its factorization.

972381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1891.

The product of its digits is 3024, while the sum is 30.

The square root of 972381 is about 986.0938089249. The cubic root of 972381 is about 99.0707585157.

It can be divided in two parts, 9 and 72381, that added together give a triangular number (72390 = T₃₈₀).

The spelling of 972381 in words is "nine hundred seventy-two thousand, three hundred eighty-one".