196277993 has 2 divisors, whose sum is σ = 196277994. Its totient is φ = 196277992.

The previous prime is 196277981. The next prime is 196278013. The reversal of 196277993 is 399772691.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139546969 + 56731024 = 11813^2 + 7532^2 .

It is a cyclic number.

It is not a de Polignac number, because 196277993 - 2⁸ = 196277737 is a prime.

It is a super-2 number, since 2×196277993² = 77050101072216098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (196277953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98138996 + 98138997.

It is an arithmetic number, because the mean of its divisors is an integer number (98138997).

Almost surely, 2^196277993 is an apocalyptic number.

It is an amenable number.

196277993 is a deficient number, since it is larger than the sum of its proper divisors (1).

196277993 is an equidigital number, since it uses as much as digits as its factorization.

196277993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1285956, while the sum is 53.

The square root of 196277993 is about 14009.9248035098. The cubic root of 196277993 is about 581.1530697734.

The spelling of 196277993 in words is "one hundred ninety-six million, two hundred seventy-seven thousand, nine hundred ninety-three".