249465445 has 4 divisors (see below), whose sum is σ = 299358540. Its totient is φ = 199572352.

The previous prime is 249465409. The next prime is 249465451. The reversal of 249465445 is 544564942.

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

It can be written as a sum of positive squares in 2 ways, for example, as 74114881 + 175350564 = 8609^2 + 13242^2 .

It is a cyclic number.

It is not a de Polignac number, because 249465445 - 2¹¹ = 249463397 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24946540 + ... + 24946549.

It is an arithmetic number, because the mean of its divisors is an integer number (74839635).

Almost surely, 2^249465445 is an apocalyptic number.

It is an amenable number.

249465445 is a deficient number, since it is larger than the sum of its proper divisors (49893095).

249465445 is an equidigital number, since it uses as much as digits as its factorization.

249465445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49893094.

The product of its digits is 691200, while the sum is 43.

The square root of 249465445 is about 15794.4751416437. The cubic root of 249465445 is about 629.5112064833.

The spelling of 249465445 in words is "two hundred forty-nine million, four hundred sixty-five thousand, four hundred forty-five".