494897951 has 2 divisors, whose sum is σ = 494897952. Its totient is φ = 494897950.

The previous prime is 494897933. The next prime is 494897989. The reversal of 494897951 is 159798494.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 494897951 - 2¹⁸ = 494635807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (494897651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247448975 + 247448976.

It is an arithmetic number, because the mean of its divisors is an integer number (247448976).

Almost surely, 2^494897951 is an apocalyptic number.

494897951 is a deficient number, since it is larger than the sum of its proper divisors (1).

494897951 is an equidigital number, since it uses as much as digits as its factorization.

494897951 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3265920, while the sum is 56.

The square root of 494897951 is about 22246.3019623487. The cubic root of 494897951 is about 790.9916250366.

The spelling of 494897951 in words is "four hundred ninety-four million, eight hundred ninety-seven thousand, nine hundred fifty-one".