249672399 has 16 divisors (see below), whose sum is σ = 335271552. Its totient is φ = 165266208.

The previous prime is 249672373. The next prime is 249672431. The reversal of 249672399 is 993276942.

It is not a de Polignac number, because 249672399 - 2⁷ = 249672271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249672349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 387972 + ... + 388614.

It is an arithmetic number, because the mean of its divisors is an integer number (20954472).

Almost surely, 2^249672399 is an apocalyptic number.

249672399 is a deficient number, since it is larger than the sum of its proper divisors (85599153).

249672399 is a wasteful number, since it uses less digits than its factorization.

249672399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1366.

The product of its digits is 1469664, while the sum is 51.

The square root of 249672399 is about 15801.0252515462. The cubic root of 249672399 is about 629.6852370690.

The spelling of 249672399 in words is "two hundred forty-nine million, six hundred seventy-two thousand, three hundred ninety-nine".