494077657 has 2 divisors, whose sum is σ = 494077658. Its totient is φ = 494077656.

The previous prime is 494077621. The next prime is 494077663. The reversal of 494077657 is 756770494.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 297769536 + 196308121 = 17256^2 + 14011^2 .

It is a cyclic number.

It is not a de Polignac number, because 494077657 - 2²³ = 485689049 is a prime.

It is a super-2 number, since 2×494077657² = 488225462293219298, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 494077657.

It is not a weakly prime, because it can be changed into another prime (494077667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247038828 + 247038829.

It is an arithmetic number, because the mean of its divisors is an integer number (247038829).

Almost surely, 2^494077657 is an apocalyptic number.

It is an amenable number.

494077657 is a deficient number, since it is larger than the sum of its proper divisors (1).

494077657 is an equidigital number, since it uses as much as digits as its factorization.

494077657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1481760, while the sum is 49.

The square root of 494077657 is about 22227.8576790477. The cubic root of 494077657 is about 790.5543601414.

The spelling of 494077657 in words is "four hundred ninety-four million, seventy-seven thousand, six hundred fifty-seven".