972213739 has 8 divisors (see below), whose sum is σ = 1141131488. Its totient is φ = 810803520.

The previous prime is 972213733. The next prime is 972213857. The reversal of 972213739 is 937312279.

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 972213739 - 2¹⁷ = 972082667 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 972213695 and 972213704.

It is not an unprimeable number, because it can be changed into a prime (972213733) 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, 1876602 + ... + 1877119.

It is an arithmetic number, because the mean of its divisors is an integer number (142641436).

Almost surely, 2^972213739 is an apocalyptic number.

972213739 is a deficient number, since it is larger than the sum of its proper divisors (168917749).

972213739 is a wasteful number, since it uses less digits than its factorization.

972213739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3753765.

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

The square root of 972213739 is about 31180.3421886290. The cubic root of 972213739 is about 990.6507774363.

The spelling of 972213739 in words is "nine hundred seventy-two million, two hundred thirteen thousand, seven hundred thirty-nine".