83940313 has 2 divisors, whose sum is σ = 83940314. Its totient is φ = 83940312.

The previous prime is 83940299. The next prime is 83940319. The reversal of 83940313 is 31304938.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52881984 + 31058329 = 7272^2 + 5573^2 .

It is a cyclic number.

It is not a de Polignac number, because 83940313 - 2¹⁷ = 83809241 is a prime.

It is a super-2 number, since 2×83940313² = 14091952293075938, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (83940319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41970156 + 41970157.

It is an arithmetic number, because the mean of its divisors is an integer number (41970157).

Almost surely, 2^83940313 is an apocalyptic number.

It is an amenable number.

83940313 is a deficient number, since it is larger than the sum of its proper divisors (1).

83940313 is an equidigital number, since it uses as much as digits as its factorization.

83940313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 83940313 is about 9161.8946184728. The cubic root of 83940313 is about 437.8481591091.

The spelling of 83940313 in words is "eighty-three million, nine hundred forty thousand, three hundred thirteen".