249470 has 32 divisors (see below), whose sum is σ = 514080. Its totient is φ = 86400.

The previous prime is 249463. The next prime is 249497. The reversal of 249470 is 74942.

249470 = T₄₀ + T₄₁ + ... + T₁₁₅.

249470 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a d-powerful number, because it can be written as 2¹⁷ + 4 + 4² + 9³ + 7⁶ + 0 .

It is a congruent number.

It is an unprimeable number.

249470 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2420 + ... + 2520.

It is an arithmetic number, because the mean of its divisors is an integer number (16065).

2²⁴⁹⁴⁷⁰ is an apocalyptic number.

249470 is an abundant number, since it is smaller than the sum of its proper divisors (264610).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

249470 is a wasteful number, since it uses less digits than its factorization.

249470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 249470 is about 499.4697188019. The cubic root of 249470 is about 62.9515037884.

The spelling of 249470 in words is "two hundred forty-nine thousand, four hundred seventy".