493897919 has 2 divisors, whose sum is σ = 493897920. Its totient is φ = 493897918.

The previous prime is 493897861. The next prime is 493897981. The reversal of 493897919 is 919798394.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 493897919 - 2¹² = 493893823 is a prime.

It is a super-2 number, since 2×493897919² = 487870308785061122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (493897219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246948959 + 246948960.

It is an arithmetic number, because the mean of its divisors is an integer number (246948960).

Almost surely, 2^493897919 is an apocalyptic number.

493897919 is a deficient number, since it is larger than the sum of its proper divisors (1).

493897919 is an equidigital number, since it uses as much as digits as its factorization.

493897919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4408992, while the sum is 59.

The square root of 493897919 is about 22223.8142315850. The cubic root of 493897919 is about 790.4584845967.

The spelling of 493897919 in words is "four hundred ninety-three million, eight hundred ninety-seven thousand, nine hundred nineteen".