249406 has 4 divisors (see below), whose sum is σ = 374112.
Its totient is φ = 124702.
The previous prime is 249397. The next prime is 249419. The reversal of 249406 is 604942.
It is a semiprime because it is the product of two primes.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62350 + ... + 62353.
It is an arithmetic number, because the mean of its divisors is an integer number (93528).
2249406 is an apocalyptic number.
249406 is a deficient number, since it is larger than the sum of its proper divisors (124706).
249406 is a wasteful number, since it uses less digits than its factorization.
249406 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 124705.
The product of its (nonzero) digits is 1728, while the sum is 25.
The square root of 249406 is about 499.4056467442.
The cubic root of 249406 is about 62.9461200538.
The spelling of 249406 in words is "two hundred forty-nine thousand, four hundred six".