249292799 has 4 divisors (see below), whose sum is σ = 284906064. Its totient is φ = 213679536.

The previous prime is 249292783. The next prime is 249292807. The reversal of 249292799 is 997292942.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 997292942 = 2 ⋅498646471.

It is not a de Polignac number, because 249292799 - 2⁴ = 249292783 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 249292799.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249292739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17806622 + ... + 17806635.

It is an arithmetic number, because the mean of its divisors is an integer number (71226516).

Almost surely, 2^249292799 is an apocalyptic number.

249292799 is a deficient number, since it is larger than the sum of its proper divisors (35613265).

249292799 is an equidigital number, since it uses as much as digits as its factorization.

249292799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35613264.

The product of its digits is 1469664, while the sum is 53.

The square root of 249292799 is about 15789.0088035950. The cubic root of 249292799 is about 629.3659523338.

The spelling of 249292799 in words is "two hundred forty-nine million, two hundred ninety-two thousand, seven hundred ninety-nine".