249957469 has 8 divisors (see below), whose sum is σ = 252517752. Its totient is φ = 247403520.

The previous prime is 249957439. The next prime is 249957473. The reversal of 249957469 is 964759942.

It can be written as a sum of positive squares in 4 ways, for example, as 1369 + 249956100 = 37^2 + 15810^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 249957469 - 2⁵ = 249957437 is a prime.

It is a super-2 number, since 2×249957469² = 124957472617771922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249957419) 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, 132517 + ... + 134389.

It is an arithmetic number, because the mean of its divisors is an integer number (31564719).

Almost surely, 2^249957469 is an apocalyptic number.

It is an amenable number.

249957469 is a deficient number, since it is larger than the sum of its proper divisors (2560283).

249957469 is a wasteful number, since it uses less digits than its factorization.

249957469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3167.

The product of its digits is 4898880, while the sum is 55.

The square root of 249957469 is about 15810.0432953234. The cubic root of 249957469 is about 629.9247991200.

The spelling of 249957469 in words is "two hundred forty-nine million, nine hundred fifty-seven thousand, four hundred sixty-nine".