249009359 has 4 divisors (see below), whose sum is σ = 255082800. Its totient is φ = 242935920.

The previous prime is 249009331. The next prime is 249009367. The reversal of 249009359 is 953900942.

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 249009359 - 2¹⁶ = 248943823 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 6073399 = 249009359 / (2 + 4 + 9 + 0 + 0 + 9 + 3 + 5 + 9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249009389) 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, 3036659 + ... + 3036740.

It is an arithmetic number, because the mean of its divisors is an integer number (63770700).

Almost surely, 2^249009359 is an apocalyptic number.

249009359 is a deficient number, since it is larger than the sum of its proper divisors (6073441).

249009359 is an equidigital number, since it uses as much as digits as its factorization.

249009359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6073440.

The product of its (nonzero) digits is 87480, while the sum is 41.

The square root of 249009359 is about 15780.0303865360. The cubic root of 249009359 is about 629.1273371573.

The spelling of 249009359 in words is "two hundred forty-nine million, nine thousand, three hundred fifty-nine".