947958397 has 2 divisors, whose sum is σ = 947958398. Its totient is φ = 947958396.

The previous prime is 947958383. The next prime is 947958419. The reversal of 947958397 is 793859749.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 769174756 + 178783641 = 27734^2 + 13371^2 .

It is a cyclic number.

It is not a de Polignac number, because 947958397 - 2¹¹ = 947956349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (947958497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 473979198 + 473979199.

It is an arithmetic number, because the mean of its divisors is an integer number (473979199).

Almost surely, 2^947958397 is an apocalyptic number.

It is an amenable number.

947958397 is a deficient number, since it is larger than the sum of its proper divisors (1).

947958397 is an equidigital number, since it uses as much as digits as its factorization.

947958397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17146080, while the sum is 61.

The square root of 947958397 is about 30788.9330279567. The cubic root of 947958397 is about 982.3428594020.

It can be divided in two parts, 9479 and 58397, that added together give a palindrome (67876).

The spelling of 947958397 in words is "nine hundred forty-seven million, nine hundred fifty-eight thousand, three hundred ninety-seven".