973939261 has 2 divisors, whose sum is σ = 973939262. Its totient is φ = 973939260.

The previous prime is 973939243. The next prime is 973939319. The reversal of 973939261 is 162939379.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 762091236 + 211848025 = 27606^2 + 14555^2 .

It is a cyclic number.

It is not a de Polignac number, because 973939261 - 2⁵ = 973939229 is a prime.

It is a super-2 number, since 2×973939261² = 1897115368234452242, which contains 22 as substring.

It is equal to p_49589086 and since 973939261 and 49589086 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (973930261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 486969630 + 486969631.

It is an arithmetic number, because the mean of its divisors is an integer number (486969631).

Almost surely, 2^973939261 is an apocalyptic number.

It is an amenable number.

973939261 is a deficient number, since it is larger than the sum of its proper divisors (1).

973939261 is an equidigital number, since it uses as much as digits as its factorization.

973939261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 551124, while the sum is 49.

The square root of 973939261 is about 31207.9999519354. Note that the first 4 decimals coincide. The cubic root of 973939261 is about 991.2365126306.

The spelling of 973939261 in words is "nine hundred seventy-three million, nine hundred thirty-nine thousand, two hundred sixty-one".