972135349 has 2 divisors, whose sum is σ = 972135350. Its totient is φ = 972135348.

The previous prime is 972135317. The next prime is 972135371. The reversal of 972135349 is 943531279.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 952154449 + 19980900 = 30857^2 + 4470^2 .

It is a cyclic number.

It is not a de Polignac number, because 972135349 - 2⁵ = 972135317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (972135049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 486067674 + 486067675.

It is an arithmetic number, because the mean of its divisors is an integer number (486067675).

Almost surely, 2^972135349 is an apocalyptic number.

It is an amenable number.

972135349 is a deficient number, since it is larger than the sum of its proper divisors (1).

972135349 is an equidigital number, since it uses as much as digits as its factorization.

972135349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 204120, while the sum is 43.

The square root of 972135349 is about 31179.0851212796. The cubic root of 972135349 is about 990.6241511919.

The spelling of 972135349 in words is "nine hundred seventy-two million, one hundred thirty-five thousand, three hundred forty-nine".