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499993 = 1338461
BaseRepresentation
bin1111010000100011001
3221101212021
41322010121
5111444433
614414441
74151464
oct1720431
9841767
10499993
1131171a
12201421
13146770
14d02db
159d22d
hex7a119

499993 has 4 divisors (see below), whose sum is σ = 538468. Its totient is φ = 461520.

The previous prime is 499979. The next prime is 500009. The reversal of 499993 is 399994.

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

It can be written as a sum of positive squares in 2 ways, for example, as 80089 + 419904 = 283^2 + 648^2 .

It is a cyclic number.

It is not a de Polignac number, because 499993 - 29 = 499481 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a zygodrome in base 5.

It is not an unprimeable number, because it can be changed into a prime (499903) 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, 19218 + ... + 19243.

It is an arithmetic number, because the mean of its divisors is an integer number (134617).

2499993 is an apocalyptic number.

It is an amenable number.

499993 is a deficient number, since it is larger than the sum of its proper divisors (38475).

499993 is a wasteful number, since it uses less digits than its factorization.

499993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38474.

The product of its digits is 78732, while the sum is 43.

The square root of 499993 is about 707.1018314218. The cubic root of 499993 is about 79.3696822031.

Subtracting from 499993 its reverse (399994), we obtain a palindrome (99999).

The spelling of 499993 in words is "four hundred ninety-nine thousand, nine hundred ninety-three".

Divisors: 1 13 38461 499993