973722139 has 8 divisors (see below), whose sum is σ = 1058806112. Its totient is φ = 890092800.

The previous prime is 973722137. The next prime is 973722151. The reversal of 973722139 is 931227379.

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 973722139 - 2¹ = 973722137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 973722095 and 973722104.

It is not an unprimeable number, because it can be changed into a prime (973722133) 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, 362262 + ... + 364939.

It is an arithmetic number, because the mean of its divisors is an integer number (132350764).

Almost surely, 2^973722139 is an apocalyptic number.

973722139 is a deficient number, since it is larger than the sum of its proper divisors (85083973).

973722139 is a wasteful number, since it uses less digits than its factorization.

973722139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 727317.

The product of its digits is 142884, while the sum is 43.

The square root of 973722139 is about 31204.5211307592. The cubic root of 973722139 is about 991.1628477873.

The spelling of 973722139 in words is "nine hundred seventy-three million, seven hundred twenty-two thousand, one hundred thirty-nine".