249804285 has 8 divisors (see below), whose sum is σ = 399686880. Its totient is φ = 133228944.

The previous prime is 249804271. The next prime is 249804287. The reversal of 249804285 is 582408942.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 249804285 - 2¹³ = 249796093 is a prime.

It is a super-2 number, since 2×249804285² = 124804361608722450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249804287) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8326795 + ... + 8326824.

It is an arithmetic number, because the mean of its divisors is an integer number (49960860).

Almost surely, 2^249804285 is an apocalyptic number.

It is an amenable number.

249804285 is a deficient number, since it is larger than the sum of its proper divisors (149882595).

249804285 is a wasteful number, since it uses less digits than its factorization.

249804285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16653627.

The product of its (nonzero) digits is 184320, while the sum is 42.

The square root of 249804285 is about 15805.1980373547. The cubic root of 249804285 is about 629.7960917317.

The spelling of 249804285 in words is "two hundred forty-nine million, eight hundred four thousand, two hundred eighty-five".