249491346 has 16 divisors (see below), whose sum is σ = 537366144. Its totient is φ = 76766544.

The previous prime is 249491329. The next prime is 249491351. The reversal of 249491346 is 643194942.

It is a junction number, because it is equal to n+sod(n) for n = 249491298 and 249491307.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1599226 + ... + 1599381.

It is an arithmetic number, because the mean of its divisors is an integer number (33585384).

Almost surely, 2^249491346 is an apocalyptic number.

249491346 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

249491346 is an abundant number, since it is smaller than the sum of its proper divisors (287874798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

249491346 is a wasteful number, since it uses less digits than its factorization.

249491346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3198625.

The product of its digits is 186624, while the sum is 42.

The square root of 249491346 is about 15795.2950589725. The cubic root of 249491346 is about 629.5329922735.

The spelling of 249491346 in words is "two hundred forty-nine million, four hundred ninety-one thousand, three hundred forty-six".