249326399 has 16 divisors (see below), whose sum is σ = 291710976. Its totient is φ = 208656000.

The previous prime is 249326383. The next prime is 249326401. The reversal of 249326399 is 993623942.

It is not a de Polignac number, because 249326399 - 2⁴ = 249326383 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249326359) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 206999 + ... + 208199.

It is an arithmetic number, because the mean of its divisors is an integer number (18231936).

Almost surely, 2^249326399 is an apocalyptic number.

249326399 is a deficient number, since it is larger than the sum of its proper divisors (42384577).

249326399 is a wasteful number, since it uses less digits than its factorization.

249326399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1886.

The product of its digits is 629856, while the sum is 47.

The square root of 249326399 is about 15790.0727990722. The cubic root of 249326399 is about 629.3942266443.

The spelling of 249326399 in words is "two hundred forty-nine million, three hundred twenty-six thousand, three hundred ninety-nine".