493893731 has 4 divisors (see below), whose sum is σ = 494142312. Its totient is φ = 493645152.

The previous prime is 493893713. The next prime is 493893761. The reversal of 493893731 is 137398394.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 493893731 - 2¹⁸ = 493631587 is a prime.

It is a super-2 number, since 2×493893731² = 487862035042200722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (493893761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121286 + ... + 125291.

It is an arithmetic number, because the mean of its divisors is an integer number (123535578).

Almost surely, 2^493893731 is an apocalyptic number.

493893731 is a deficient number, since it is larger than the sum of its proper divisors (248581).

493893731 is a wasteful number, since it uses less digits than its factorization.

493893731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248580.

The product of its digits is 489888, while the sum is 47.

The square root of 493893731 is about 22223.7200081355. The cubic root of 493893731 is about 790.4562503634.

The spelling of 493893731 in words is "four hundred ninety-three million, eight hundred ninety-three thousand, seven hundred thirty-one".