249412465 has 8 divisors (see below), whose sum is σ = 299395368. Its totient is φ = 199463040.

The previous prime is 249412451. The next prime is 249412547. The reversal of 249412465 is 564214942.

It can be written as a sum of positive squares in 4 ways, for example, as 15689521 + 233722944 = 3961^2 + 15288^2 .

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

It is not a de Polignac number, because 249412465 - 2¹⁷ = 249281393 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

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 in 7 ways as a sum of consecutive naturals, for example, 12979 + ... + 25831.

It is an arithmetic number, because the mean of its divisors is an integer number (37424421).

Almost surely, 2^249412465 is an apocalyptic number.

It is an amenable number.

249412465 is a deficient number, since it is larger than the sum of its proper divisors (49982903).

249412465 is a wasteful number, since it uses less digits than its factorization.

249412465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16739.

The product of its digits is 69120, while the sum is 37.

The square root of 249412465 is about 15792.7978838457. The cubic root of 249412465 is about 629.4666393690.

The spelling of 249412465 in words is "two hundred forty-nine million, four hundred twelve thousand, four hundred sixty-five".