493991995 has 16 divisors (see below), whose sum is σ = 695786688. Its totient is φ = 329581440.

The previous prime is 493991989. The next prime is 493992019. The reversal of 493991995 is 599199394.

It is not a de Polignac number, because 493991995 - 2³ = 493991987 is a prime.

It is a super-2 number, since 2×493991995² = 488056182248160050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 189436 + ... + 192025.

It is an arithmetic number, because the mean of its divisors is an integer number (43486668).

Almost surely, 2^493991995 is an apocalyptic number.

493991995 is a deficient number, since it is larger than the sum of its proper divisors (201794693).

493991995 is a wasteful number, since it uses less digits than its factorization.

493991995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381510.

The product of its digits is 3542940, while the sum is 58.

The square root of 493991995 is about 22225.9306891748. The cubic root of 493991995 is about 790.5086693606.

The spelling of 493991995 in words is "four hundred ninety-three million, nine hundred ninety-one thousand, nine hundred ninety-five".