249406424 has 8 divisors (see below), whose sum is σ = 467637060. Its totient is φ = 124703208.

The previous prime is 249406387. The next prime is 249406427. The reversal of 249406424 is 424604942.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249406427) 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 as a sum of consecutive naturals, namely, 15587894 + ... + 15587909.

Almost surely, 2^249406424 is an apocalyptic number.

It is an amenable number.

249406424 is a deficient number, since it is larger than the sum of its proper divisors (218230636).

249406424 is a wasteful number, since it uses less digits than its factorization.

249406424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31175809 (or 31175805 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 35.

The square root of 249406424 is about 15792.6066246203. The cubic root of 249406424 is about 629.4615572404.

The spelling of 249406424 in words is "two hundred forty-nine million, four hundred six thousand, four hundred twenty-four".