249470318 has 4 divisors (see below), whose sum is σ = 374205480. Its totient is φ = 124735158.

The previous prime is 249470269. The next prime is 249470321. The reversal of 249470318 is 813074942.

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

It is a super-2 number, since 2×249470318² = 124470879126042248, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62367578 + ... + 62367581.

It is an arithmetic number, because the mean of its divisors is an integer number (93551370).

Almost surely, 2^249470318 is an apocalyptic number.

249470318 is a deficient number, since it is larger than the sum of its proper divisors (124735162).

249470318 is a wasteful number, since it uses less digits than its factorization.

249470318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124735161.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 249470318 is about 15794.6294036929. The cubic root of 249470318 is about 629.5153053651.

The spelling of 249470318 in words is "two hundred forty-nine million, four hundred seventy thousand, three hundred eighteen".