249404 has 6 divisors (see below), whose sum is σ = 436464. Its totient is φ = 124700.

The previous prime is 249397. The next prime is 249419. The reversal of 249404 is 404942.

249404 = T₁₃₂ + T₁₃₃ + ... + T₁₅₅.

It is a happy number.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 249404.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 249404.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31172 + ... + 31179.

It is an arithmetic number, because the mean of its divisors is an integer number (72744).

2²⁴⁹⁴⁰⁴ is an apocalyptic number.

It is an amenable number.

249404 is a deficient number, since it is larger than the sum of its proper divisors (187060).

249404 is a wasteful number, since it uses less digits than its factorization.

249404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62355 (or 62353 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 249404 is about 499.4036443600. The cubic root of 249404 is about 62.9459517972.

The spelling of 249404 in words is "two hundred forty-nine thousand, four hundred four".