493390577 has 2 divisors, whose sum is σ = 493390578. Its totient is φ = 493390576.

The previous prime is 493390559. The next prime is 493390591. The reversal of 493390577 is 775093394.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 270306481 + 223084096 = 16441^2 + 14936^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-493390577 is a prime.

It is a super-2 number, since 2×493390577² = 486868522944785858, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (493390277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246695288 + 246695289.

It is an arithmetic number, because the mean of its divisors is an integer number (246695289).

Almost surely, 2^493390577 is an apocalyptic number.

It is an amenable number.

493390577 is a deficient number, since it is larger than the sum of its proper divisors (1).

493390577 is an equidigital number, since it uses as much as digits as its factorization.

493390577 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 714420, while the sum is 47.

The square root of 493390577 is about 22212.3969215391. The cubic root of 493390577 is about 790.1877335178.

The spelling of 493390577 in words is "four hundred ninety-three million, three hundred ninety thousand, five hundred seventy-seven".